Entries |
Document | Title | Date |
20100176992 | METHOD AND DEVICE FOR DETERMINING A POSITION - A positioning device is disclosed including a receiving device to receive signals from a plurality of transmitters, the transmitters being part of an absolute positioning system. In at least one embodiment, the position device is further arranged to determine transmitter positions of each transmitter and to compute from which transmitters direct receipt of signals is possible based on a previously determined position, the respective transmitter positions and multi path information. The positioning device is further arranged to determine a position. A method, computer program, and data carrier are further disclosed. | 07-15-2010 |
20100182197 | METHOD AND APPARATUS FOR SIGNAL PROCESSING IN A SATELLITE POSITIONING SYSTEM - A method and apparatus for processing satellite positioning system (SPS) signals which are weak in level. In one embodiment, a SPS receiver receives at least two signal samples representing, at least in part, common information, wherein the two signal samples are associated with one or more satellite messages. By combining the two signal samples, navigation information (e.g., time, position, velocity, etc.) may be determined based on the combination of the two signal samples. According to another embodiment, the two signal samples are differentially demodulated and summed together to form the combination. | 07-22-2010 |
20100214167 | POSITIONING METHOD - A reception environment is determined to be a multipath environment when the difference (positioning altitude difference) between the maximum value (maximum altitude) and the minimum value (minimum altitude) of the altitudes of candidate present positions P of respective satellite sets exceeds a given threshold value (e.g., 200 m), and is determined to be an open-sky environment when the positioning altitude difference is equal to or less than the given threshold value. When the reception environment is the open-sky environment, an evaluation point E of each satellite set is calculated using a known evaluation method based on the number of satellites, a PDOP value, and the like. When the reception environment is the multipath environment, the evaluation point E of each satellite set is calculated in the same manner as in the open-sky environment, and a change amount ΔE corresponding to the difference (altitude difference) between the altitude corresponding to the preceding located position acquired from an altitude table and the altitude of the candidate present position of the target satellite set is subtracted from the evaluation point E. | 08-26-2010 |
20100225534 | GPS RECEPTION APPARATUS AND POSITIONAL CALCULATION METHOD FOR THE SAME - A reception unit receives global positioning system signals transmitted by a plurality of satellites to obtain satellite information. A determination unit determines whether or not a state in which the reception unit receives the global positioning system signals is a predetermined reception state. A positional calculation unit calculates a current position based on ephemeris information and almanac information when the reception state is the predetermined reception state, the ephemeris information including at least orbital six elements and being obtained from satellite information of first and second satellites among satellite information of three satellites, and the almanac information including at least orbital six elements on a general orbit of a third satellite of the three satellites. | 09-09-2010 |
20100231444 | POSITIONING RECEIVER AND POSITIONING METHOD - A positioning receiver and method in which the time required for signal acquisition can be reduced and positioning time can be reduced by increasing the occasion of the signal acquisition. In an SPS receiver mounted user equipment ( | 09-16-2010 |
20100245169 | Three dimensional terrain mapping - Disclosed is a technique for generating a three dimensional terrain map of a geographic area. Mobile units are equipped with satellite receivers (e.g., GPS receivers) for generating location data. A map generator uses the location data to generate a three dimensional terrain map. In one embodiment, the mobile units have primary uses other than mapping, and are traversing the geographic area to be mapped in connection with their primary function. The map generation process may be performed iteratively over time, as additional location data becomes available. During a time period when location data is unavailable for a portion of the three dimensional terrain map, the map generator may estimate the missing portion of the map using the available data. The estimated portion may later be updated with actual data as that data becomes available. The map may also contain enhancements based on enhancement data received by the map generator. | 09-30-2010 |
20100245170 | GNSS RECEIVER - A GNSS receiver interfaceable to a host, in which the search functions in the acquisition phase are carried out by the host's resources. The receiver provides correlation samples to the host system by a dedicated high-speed interface, preferably a DMA interface. | 09-30-2010 |
20100265128 | POSITIONING DETERMINATIONS OF RECEIVERS - The disclosed method and system is used to determine the position of a user device. The user device can receive data signals and/or carrier signals from orbiting space vehicles. These data signals can be used for positioning calculation and/or track maintenance of the user device. The disclosed method and system can account for time and frequency biases of the user device. For the track maintenance, a Kalman filter state estimator can be extended to include a velocity of the user device. | 10-21-2010 |
20100265129 | PORTABLE SATELLITE TERMINAL - A portable satellite antenna terminal, comprising a body and a unit within the body for controlling the terminal and terminal functions. Also provided is an antenna mounted to the body for movement relative thereto. The antenna is able to be stowed within the body when not in use. The antenna may be a flat panel antenna and is moveable relative to the body from a stowed position to an in-use position. | 10-21-2010 |
20100283671 | Receiver with means for ensuring bona fide of received signals - A receiver that receives a plurality of signals that are modulated with a common carrier, where each signal of said signals originates at a different source and experiences a transit delay and Doppler frequency shift before reaching the receiver, and where the transit delay and Doppler frequency shift are related to position and movement of each of the respective sources. The receiver includes means, such as a directional antenna, to ensure that the received signals are bona fide, or at least not subject to the same bogus signal or signals to which a second receiver may be subjected. | 11-11-2010 |
20100283672 | Signal processing techniques for improving the sensitivity of GPS receivers - A system for measuring the pseudo range from a first GPS sensor to a designated navigational satellite, for use in a satellite positioning system (SPS) is comprised of first and second GPS sensors for receiving and recording first and second portions of the signal transmitted by the designated navigational satellite, the recordings referred to as the first and second datagrams; and means for transmitting the first and second datagrams to a datagram processing facility wherein the pseudo range from the first GPS sensor to the designated navigational satellite is extracted. The datagram processing facility for extracting the pseudo range is further comprised of a pseudo range engine for extracting a pseudo range from a datagram originating with said first GPS sensor, the location of which is to be determined, the extraction accomplished with the aid of a perfect reference; and a perfect reference engine for generating a perfect reference from a datagram originating with a second GPS sensor designated for the express purpose of perfect reference generation. The perfect reference reduces the minimum number of satellites required to fix a position from four to three, and further enables the pseudo range engine to recombine multi-path GPS signals. | 11-11-2010 |
20100283673 | Signal processing techniques for improving the sensitivity of GPS receivers - A system for measuring the pseudo range from a target GPS sensor to a designated navigational satellite, for use in a satellite positioning system (SPS) is comprised of multiple GPS sensors for receiving and recording portions of the signals transmitted by designated navigational satellites, the recordings referred to as datagrams; and means for transmitting the datagrams to a datagram processing facility wherein the pseudo range from the target GPS sensor to the designated navigational satellite is derived. The datagram processing facility for deriving the pseudo range is further comprised of a pseudo range engine for deriving a pseudo range from a datagram originating with said target GPS sensor, the location of which is to be determined, the derivation accomplished with the aid of a perfect reference; a perfect reference engine for generating a perfect reference from one or more satellite-specific datagrams: and a strong signal suppression engine for synthesizing satellite-specific datagrams from I/F signals recorded by reference GPS sensors designated for the express purpose of perfect reference generation. The perfect reference reduces the minimum signal strength required to acquire and accurately track GPS satellites at or near the horizon. | 11-11-2010 |
20100283674 | TILT COMPENSATION FOR GNSS ANTENNA - A method and system of improving Global Navigation Satellite System (GNSS) results by compensating for antenna tilt in determining the location of the GNSS receiver is disclosed. In general, the angle of tilt of the antenna is determined. The actual elevation of a satellite is determined. The effective elevation of the satellite relative to the antenna is then calculated. | 11-11-2010 |
20100302096 | METHOD OF DETERMINING THE POSITION OF A MOBILE DEVICE - A set of device parameters consisting of clock bias and position of a mobile device is determined without previous knowledge of the week number (WN) in that solutions of a set of equations derived from a least squares type weight function involving pseudoranges related to the device parameters via basic equations are attempted with a time of week (TOW) extracted from satellite signals and various week number candidates. A solution algorithm which iteratively solves the set of equations is used, each iteration step involving a linearization of the latter and resulting in corrections of the device parameters. After elimination of week numbers where the solution algorithm does not yield a solution a valid week number is selected from the remaining week numbers in that a deviation value is determined which reflects differential terms, i.e., differences between pseudorange values as measured and as derived from the set of device parameters according to the solution, e.g., by evaluation of the weight function. The week number yielding the smallest deviation value is selected. If the week number is confirmed by various checks the device parameters according to the corresponding solution are used, e.g., displayed, by the mobile device. | 12-02-2010 |
20100302097 | POSITION DETERMINATION METHOD, POSITIONING DEVICE, AND ELECTRONIC INSTRUMENT - A position determination method includes: performing a positioning process that calculates a located position by performing positioning calculations using satellite signals; determining whether or not a convergence condition is satisfied based on current and preceding positioning results when the positioning process is performed, the convergence condition being specified as a condition for determining whether or not the positioning results of the repeated positioning processes have converged; and determining the located position calculated by the current positioning process to be an output position when the convergence condition is satisfied. | 12-02-2010 |
20100315285 | POSITION DETERMINATION BASED ON CORROBORATED SIGNAL PROCESSING OF PRN CODES - Embodiments provided herein recite methods and systems for corroborating position system code from Navigation Satellite System (NSS) signals. In one embodiment, a NSS high yield module attempts to determine a high yield location solution based on a first set of PRN codes. In addition, a NSS high accuracy module attempts to determine a high accuracy location solution based on signal processing of the same first set of PRN codes. A location solution corroborator module receives input from both the NSS high yield module and the NSS high accuracy module and generates a corroborated location solution. In one embodiment, a position provider outputs the corroborated location solution. | 12-16-2010 |
20100315286 | System and Method for Site Calibration of a Surveying Device - A system and method for site calibration of a controller is provided. In one embodiment, a method may include determining coordinates of a point in a first coordinate system based on at least one measurement by a surveying device, determining coordinates of the point in a second coordinate system based on data provided by a global positioning device, and calculating a transformation of the first coordinate system relative to the second coordinate system based on the coordinates determined for the point. The method may further include calibrating the controller based, at least in part, on the transformation. | 12-16-2010 |
20100328146 | Systems and Methods for Synthesizing GPS Measurements to Improve GPS Location Availability - There are situations where GPS signals are received from less than four satellites. In order to improve the GPS location availability, disclosed here are systems and methods for synthesizing GPS measurements, which, together with fewer than four available real GPS signals, can be used to calculate a position fix. In particular, GPS range measurements for lost satellites, which are satellites that were previously tracked but are now not tracked, are synthesized to improve GPS signal availability. The synthesized measurements are used along with real measurements to enable accurate position fix even when GPS satellite availability is poor. Different synthesized measurement generation schemes, depending on whether an INS/DR aiding system is available, are further described herein. | 12-30-2010 |
20100328147 | PROCESSING OF SATELLITE NAVIGATION SYSTEM SIGNALS - A system implements a location based service, and comprises a satellite navigation receiver implementing a position tracking function for providing the location of a user of the service. An analogue rf receiver ( | 12-30-2010 |
20110001665 | Camera Radio Signal Operation Based on Global Positioning - Methods and by which a radio signal transmitter of a photographic device may be configured to adhere to the local legal and regulatory limits of a specific region based on a locational fix data derived from a global positioning system GPS receiver of the photographic device. | 01-06-2011 |
20110012781 | METHOD AND APPARATUS FOR GEOGRAPHIC POSITIONING - Aspects of the disclosure provide methods for positioning transmitting stations, such as cell towers. Further, aspects of the disclosure provide a database for storing information of the transmitting stations. In addition, aspects of the disclosure provide methods for positioning a moving object having a receiver based on the database of the transmitting stations and wireless signals transmitted by the transmitting stations. The methods increase in-transit location visibility of shipment while reducing GNSS usage, and thus reduce power consumption. The methods allow positioning receiving stations when GNSS signals may not be available, such as due to interference. | 01-20-2011 |
20110012782 | Apparatus for Location Information Tag of Object and System for Managing Location Information - An object position information tag apparatus, which is attached to an object and transmits position information of the object, includes a global positioning system (GPS) module for receiving a satellite signal from a GSP satellite and calculating the position information of the object and a communication module for transmitting data of the position information being input from the GPS module and a unique identification (ID) code being distinctive for each object to an external device through radio communication. Accordingly, it is possible to effectively recognize positions of products or equipment to which the tag apparatus is attached, regardless of the number and storage place of products or equipment, based on which information regarding movement, storage, and shipping of the open-air stored or stored products or equipment can be collectively gathered and managed. | 01-20-2011 |
20110018760 | GPS FILTER ALGORITHM - A method for determining location such as vehicle location receives data at a predetermined frequency, validates the received data, stores the received data based on the validation and computes a location based on the stored data. The validation includes verifying a presence of particular data substrings within the received data, verifying a presence of a plurality of data fields within each data substring, computing a parameter based on information contained in two of the plurality of data fields and comparing the computer parameter with a pre-defined threshold. | 01-27-2011 |
20110025556 | CONNECTION LOCATOR IN A POWER AGGREGATION SYSTEM FOR DISTRIBUTED ELECTRIC RESOURCES - Systems and methods are described for a power aggregation system. In one implementation, a service establishes individual Internet connections to numerous electric resources intermittently connected to the power grid, such as electric vehicles. The Internet connection may be made over the same wire that connects the resource to the power grid. The service optimizes power flows to suit the needs of each resource and each resource owner, while aggregating flows across numerous resources to suit the needs of the power grid. The service can bring vast numbers of electric vehicle batteries online as a new, dynamically aggregated power resource for the power grid. Electric vehicle owners can participate in an electricity trading economy regardless of where they plug into the power grid. | 02-03-2011 |
20110037644 | METHOD AND APPARATUS FOR UTILIZATION OF LOCATION DETERMINATION SIGNAL SAMPLES IN NOISY ENVIRONMENTS - An apparatus for location determination includes a location determination receiver configured to receive location determination signals, a location determination signal quality assessment component configured to assess a quality of received location determination signals, and a location determination processor responsive to an output of the location determination signal quality component. The apparatus determining a location of the location determination receiver based on the location determination signals that are received during time periods when the location determination signal meets or exceeds a location determination signal quality threshold. A method for location determination is also disclosed. | 02-17-2011 |
20110037645 | GPS PRE-AQUISITION FOR GEOTAGGING DIGITAL PHOTOS - A handheld electronic device, such as a GPS-enabled wireless communications device with an embedded camera, a GPS-enabled camera-phone or a GPS-enabled digital camera, determines whether ephemeris data needs to be obtained for geotagging digital photos taken with the device. By monitoring user activity with respect to the camera, such as activation of the camera, the device can begin pre-acquisition of a GPS position fix by obtaining needed ephemeris data before the photograph is actually taken. This GPS pre-acquisition improves the likelihood that a position fix (GPS lock) is achieved by the time the photo is taken (to enable immediate geotagging). Alternatively, the photo can be geotagged retroactively by appending the current location to the metadata tag associated with the digital photo. An optional acquisition status indicator can be displayed on a user interface of the device to indicate that a position fix is being obtained. | 02-17-2011 |
20110050491 | DEVICE AND METHOD FOR PRODUCING A DATA STREAM ON THE BASIS OF DATA PACKETS PROVIDED WITH PACKET SEQUENCE MARKS, AND SATELLITE RECEIVERS FOR PROVIDING THE DATA STREAM - A device for determining a position of a satellite receiver on the basis of data packets that are received from the satellite receiver, include a satellite signal, and are provided with packet sequence marks includes a packet loss detector for detecting, while using the packet sequence marks, whether one or more data packets between two received data packets have been lost, and a data packet processor configured to replace the one or more lost packets by one or more fill-in packets so as to generate a data stream as a sequence of the received data packets and of the fill-in packets inserted in place of the lost data packets. The device further includes a correlator configured to correlate the data stream with a reference data sequence to obtain a correlation result, and a position determiner configured to determine the position of the satellite receiver by means of the correlation result. | 03-03-2011 |
20110057833 | SELECTING RAW MEASUREMENTS FOR USE IN POSITION COMPUTATION - Raw measurements for a plurality of GNSS satellites are pruned based on signal to noise ratio (SNR) and elevation; with remaining unpruned raw measurements sorted by SNR into a sorted list of raw measurements. A first dilution of precision (DOP) based selecting process is performed to select an initial candidate list of raw measurements. The first DOP selecting process begins by using at least those of said pruned list of raw measurements which exceed an SNR quality threshold. The initial candidate list of raw measurements is sorted by elevation angle. A second DOP selecting process is performed to select a final candidate list of raw measurements. The second DOP selecting process begins by using at least those of the sorted initial candidate list which an elevation quality threshold. The final candidate list is used in position computation for a present epoch. | 03-10-2011 |
20110057834 | MULTI-FREQUENCY GNSS RECEIVER BASEBAND DSP - A dual-frequency DSP correlator receives I and Q signal components from a down convertor in a GNSS receiver system. The signal components are cross-wiped (de-spread) for noise cancellation and can be combined for use in a processor. | 03-10-2011 |
20110063165 | METHODS AND APPARATUSES FOR AFFECTING APPLICATION OF A FILTERING MODEL USING CARRIER PHASE - Methods and apparatuses are provided that may be implemented various electronic devices to affect application of a filtering model used for obtaining a navigation solution. In particular, signal characteristics of one or more received signals are used for selecting application of a particular filtering model from a plurality of filtering models. | 03-17-2011 |
20110074625 | Determination of a Relative Position of a Satellite Signal Receiver - For enhancing the quality of a relative positioning, a filter is adjusted depending on information on a movement of a satellite signal receiver. A position of the satellite signal receiver is determined relative to a reference station using the filter, wherein measurements on satellite signals received by the satellite signal receiver and measurements on satellite signals provided for the reference station are used as input to the filter. The measurements for the reference station may be received in messages which are assembled and provided for transmission and which may include in addition an indication of a current movement of the reference station. | 03-31-2011 |
20110084875 | EXECUTION METHOD OF POSITION CALCULATING CIRCUIT, POSITION CALCULATING CIRCUIT, OPERATION CONTROL METHOD OF POSITION CALCULATING CIRCUIT, HOST DEVICE, AND ELECTRONIC APPARATUS - An execution method of a position calculating circuit that calculates a position by receiving a satellite signal transmitted from a positioning satellite and that has an externally readable storage section includes: receiving a selection signal for selecting acquired information, which is information acquired from information obtained from the satellite signal, from the outside; selecting the acquired information on the basis of the selection signal; and storing the acquired information in the storage section and outputting a notice signal, which indicates that the acquired information has been obtained, when the acquired information selected from the satellite signal being received is obtained. | 04-14-2011 |
20110090112 | SATELLITE NAVIGATION RECEIVER HAVING A CONFIGURABLE ACQUISITION ENGINE - A satellite navigation receiver having a flexible acquisition and tracking engine architecture. The flexible acquisition engine has a reconfigurable delay line that can be used either as a single entity or divided into different sections. Consequently, it can be configured to search different satellite vehicles, a single Doppler frequency, and full CA code in parallel. When configuring the delay line into different sections, each section is used to search a partial CA code. In this configuration, multiple Doppler mode, multiple satellite vehicles, multiple Doppler frequencies, and partial CA code can be searched in parallel. Furthermore, the different sections of the CA code can be time-multiplexed into a correlator, which can then be over clocked to achieve full CA code correlation. The flexible tracking engine includes a number of parallel tracking channels, whereby each individual channel has a number of taps or fingers, which can be used to lock onto different delays. During tracking, one of the taps can be used to lock on to the center of the peak. This leaves the other taps free to be used to perform other functions, such as determining the shape of the peak, detecting earlier arrivals for line of sight component, and obtaining an estimate of the noise floor. The flexible tracking engine is configurable to help acquisition functions, such as fine acquisition, false trigger detection, and/or fast reacquisition. | 04-21-2011 |
20110102253 | METHODS AND APPARATUSES FOR ESTIMATING TIME RELATIONSHIP INFORMATION BETWEEN NAVIGATION SYSTEMS - Methods and apparatuses are provided that may be implemented in various electronic devices to possibly reduce a first-time-to-fix and/or otherwise increase the performance or efficiency of a device by employing a position/velocity estimation process using at least one estimated time relationship parameter. | 05-05-2011 |
20110109502 | APPARATUS, SYSTEM AND METHOD FOR DISPLAYING CONSTRUCTION-RELATED DOCUMENTS - A mobile device for displaying construction-related documents, including at least one touch-sensitive display surface, at least one image capture device, a rugged casing, and at least one handle. The device may further include a processor, a storage medium, an optical drive, a global positioning sensor, at least one power source and a plurality of external connection ports. | 05-12-2011 |
20110122019 | APPARATUS FOR SEARCHING A DISTRESS SIGNAL AND THE CONTROLLING METHOD THEREOF - Provided are an apparatus for searching a distress signal and a controlling method thereof. The apparatus for searching a distress signal includes: a beacon receiver receiving the distress signal transmitted from a distress beacon apparatus of a COSPAS-SARSAT system; a decoder decoding the distress signal to acquire distress information; and a display unit displaying the acquired distress information. The apparatus for searching a distress signal is used by a search and rescue team. | 05-26-2011 |
20110140957 | METHODS FOR REDUCING GLOBAL POSITIONING SYSTEM ERRORS IN PORTABLE ELECTRONIC DEVICES - A portable user device may provide Global Positioning System (GPS) services. The device may include a GPS unit. The GPS unit may provide accurate information about the current position, direction, and speed of the device. A user may use the device to perform tasks. Certain tasks may generate excess heat that causes the GPS unit to produce erroneous data. Methods can be used to acquire accurate data samples that are associated with the respective tasks. The device may wait for a period of time after the start of a task before acquiring a GPS sample. The device may also buffer GPS samples and to take the most recent buffered sample as the acquired GPS sample. The device may take a GPS sample immediately after the start of a task, before error starts to arise. GPS samples may be buffered and used to calculate an extrapolated data sample value. | 06-16-2011 |
20110148696 | POSITIONING DEVICE, POSITIONING METHOD AND STORAGE MEDIUM - An electronic device | 06-23-2011 |
20110169690 | SATELLITE POSITIONING - A method of estimating the position of a first event of interest using a satellite positioning system. The method comprises: performing in response to the first event a satellite reception function; determining at some later time whether it is possible to calculate a position estimate from signals resulting from the satellite reception function; and, if not, estimating the position of the first event based on a position estimate of a second event, wherein the second event is that closest in time to the first for which a position estimate is available. Thus, the method can provide a position estimate for the first event even if the satellite reception function fails. | 07-14-2011 |
20110175773 | MANAGING THE MEASUREMENT OF SIGNALS - For managing measurements on signals, a quality of received signals, for which a measurement circuit provides measurement results, is monitored. In the case that the quality does not exceed a set quality before Receive and monitor signal measurements an end of a reporting period, a reporting of measurement results that are available at the end of the reporting period is caused. In the case that the quality exceeds the set quality at a measurement instant before the end of the reporting period, the measurement circuit is put to a sleep mode and a reporting of extrapolated measurement results is caused, the extrapolated measurement results being measurement results from a measurement instant before the measurement circuit was put to a sleep mode extrapolated to the end of the reporting period. | 07-21-2011 |
20110187589 | GLOBAL NAVIGATION SATELLITE SYSTEM - Each of a first and a second navigation satellite system (NSS) are adapted to operate according to a first and a second specification, respectively, and each includes a first and a second plurality of satellite vehicles (SV), respectively. Each of the first and the second plurality of SVs are adapted to be identified by a first and a second plurality of unique corresponding identifications (IDs), respectively. A processor is adapted to receive and identify a first plurality of corresponding signals transmitted from the first plurality of SVs in response to the first plurality of unique corresponding IDs. The processor is adapted to receive and identify a second plurality of corresponding signals transmitted from the second plurality of SVs in response to the second plurality of unique corresponding IDs. The processor is adapted to determine position location information in response to receiving and identifying the first plurality of corresponding signals and the second plurality of corresponding signals. | 08-04-2011 |
20110193741 | SATELLITE SIGNAL TRACKING METHOD, POSITION CALCULATING METHOD, AND POSITION CALCULATING DEVICE - A satellite signal tracking method includes : detecting a situation of movement; calculating an error of the detection; and setting a loop bandwidth of a tracking filter, which is used to track a satellite signal received from a positioning satellite and of which the loop bandwidth can be changed, using the detection result and the calculated error. | 08-11-2011 |
20110193742 | Method and Apparatus for Weak Data Frame Sync in a Positioning System - The present invention is related to location positioning systems, and more particularly, to a method and apparatus of synchronizing to data frames in a positioning system signal. According to one aspect, the invention speeds up the frame synchronization process by computing a frame synchronization metric for each satellite and then combining together the metrics for all tracked satellites together, after compensating for respective signal transit times. Then the invention makes a frame sync decision on the combined satellite metric. In embodiments, an optimal combining algorithm is used based on CNO of each satellite. According to further aspects, the invention further speeds up the frame synchronization process by predicting many bits in the subframe so that more bits are known in addition to the 8-bit preamble. For example, the invention recognizes that many bits in a subframe rarely change or don't change very often. Moreover, the invention uses old ephemeris used to predict new ephemeris parameters. These parameters are translated into predicted bits in the signal. Still further, old ephemeris can be used to predict almanac parameters, and the almanac can be used to predict ephemeris parameters. | 08-11-2011 |
20110199256 | Global Satellite Positioning System Tracking System for Handcuffs and Feetcuffs - A GPS tracking system for handcuffs and feetcuffs, which includes a sensor, fitted with a GPS tracker, disposed within a mobile restraining device (such as: handcuffs, feetcuffs, police device, and the like). The GPS tracker is provided with a GPS receiving circuit, a microprocessor and a signal transmission circuit, and the sensor detects circumstances regarding the mobile restraining device being illegally opened, which are transmitted to the microprocessor. The GPS receiving circuit is able to receive geographic positioning satellite coordinate signals, after which the geographic positioning satellite coordinate signals are matched with an internal prestored geographic data base to obtain the position of the mobile restraining device, whereupon the position is transmitted to the microprocessor. Accordingly, the microprocessor transmits the position of the mobile restraining device and circumstances regarding being illegally opened to a remote server using the signal transmission circuit, thereby effectively controlling the whereabouts of criminals. | 08-18-2011 |
20110199257 | METHOD AND SYSTEM FOR UPDATING ALTITUDE INFORMATION FOR A LOCATION BY USING TERRAIN MODEL INFORMATION TO PRIME ALTITUDE SENSORS - Methods and systems for updating altitude information for a location by using terrain model information to prime altitude sensors are disclosed and may include determining an altitude of a wireless device including one or more altimeters. The determination of altitude may include determining a location of the wireless device, receiving an altitude value for the location from an altitude database, and measuring a change in the altitude using the altimeters. The database may include a worldwide terrain database that may be stored on a remote device, such as a server. Part of the database may be stored on the wireless device and may be updated as the wireless device moves. The location may be determined utilizing a global navigation satellite system, which may include GPS, GLONASS, and GALILLEO. The location may be measured utilizing cellular service triangulation or by utilizing one or more access points with known locations. | 08-18-2011 |
20110199258 | Method and Apparatus for Validating a Position in a Satellite Positioning System Using Range-Rate Measurements - Method and apparatus for validating an initial position in a satellite positioning system using range-rate measurements is described. In one example, range-rate measurements are obtained at the remote receiver with respect to a plurality of satellites. Expected range-rates are computed with respect to the plurality of satellites using the initial position. Single differences are computed using the range-rate measurements. Expected single differences are computed using the expected range-rates. Single difference residuals are computed between the single differences and the expected single differences. The single difference residuals are compared to a threshold. The initial position may be deemed valid if the absolute value of each of the single difference residuals is less than or equal to the threshold. A valid initial position may be used to fix the pseudorange integers. | 08-18-2011 |
20110205107 | POSITIONING DEVICE, POSITIONING METHOD AND STORAGE MEDIUM STORING PROGRAM - A positioning device including: a time counter for counting time; a first reception controller (S | 08-25-2011 |
20110205108 | Method for Position Estimation Using Generalized Error Distributions - A method for improving the results of radio location systems that incorporate weighted least squares optimization generalizes the weighted least squares method by using maximum a posteriori (MAP) probability metrics to incorporate characteristics of the specific positioning problem (e.g., UTDOA). Weighted least squares methods are typically used by TDOA and related location systems including TDOA/AOA and TDOA/GPS hybrid systems. The incorporated characteristics include empirical information about TDOA errors and the probability distribution of the mobile position relative to other network elements. A technique is provided for modeling the TDOA error distribution and the a priori mobile position. A method for computing a MAP decision metric is provided using the new probability distribution models. Testing with field data shows that this method yields significant improvement over existing weighted least squares methods. | 08-25-2011 |
20110210887 | 2D WEB TRILATERATION - The invention provides systems and methods of locating a network device based on the time latency between a request by a user device and the receipt of the request by a plurality of satellite servers provided at different locations. Preferably three or more satellites may be employed. The request may be for an item, which may have a known file size, and which may or may not exist. Triangulation techniques may be utilized to determine the location of the device relative to the satellite servers. | 09-01-2011 |
20110234454 | SYSTEM AND METHOD FOR POSITIONING IN CONFIGURED ENVIRONMENTS - The present invention relates to a system and method for providing location determination in a configured environment in which Global Navigation Satellite System Signals are not available. In this regard, local beacon systems generate spread spectrum CDMA signals that are received by spectral compression units that derive physically meaningful observations without a requirement for correlation of the intercepted energy by means of the known spreading codes. The invention can coexist with communication assets already in place, and the design allows for self calibration, which simplifies installation and usage. The invention has utility in applications in which GNSS signals are unavailable or limited, for example, in warehouse inventory management, in search and rescue operations and in asset tracking in indoor environments. | 09-29-2011 |
20110248885 | LOCATION CALCULATING METHOD AND LOCATION CALCULATING DEVICE - A location calculating method includes acquiring measurement information by receiving satellite signals from positioning satellites and storing the acquired measurement information in a storage unit in association with acquisition time, calculating movement information that includes a movement direction and a movement distance by using a detection result of a sensor unit that at least includes an acceleration sensor and storing the calculated movement information in the storage unit in association with calculation time, and calculating a location at desired time by using at least the measurement information of which the acquisition time satisfies a predetermined proximity time condition and the movement information of which the calculation time is between the acquisition time of the measurement information and the given desired time. | 10-13-2011 |
20110248886 | EVENT LOCATION DETERMINATION - A method of determining a location of an event of interest by processing signals from a satellite positioning system comprises periodically recording blocks of data samples of a satellite broadcast. In response to a request for a position determination at a particular time, a most recent block of data samples is processed in an attempt to obtain a position fix. If unsuccessful, the method further comprises processing blocks of data samples which were recorded further back in time in a sequence to make further attempts to obtain a position fix, until a position fix is obtained. The blocks of data samples used for the further attempts are irregularly spaced in time, for example more densely populated in relatively recent time than in relatively ancient time with respect to the particular time. This enables the processing resource in attempting to obtain a position fix to be allocated efficiently, thereby reducing power consumption. | 10-13-2011 |
20110254731 | High-Reliability Product/Activity Tracking System - Disclosed herein is a tracking system configured to track a product and/or an activity. The tracking system comprises a tracing device and a verification server. The tracing device is coupled with the verification server by means of communication means configured to allow exchange of data between the tracing device and the verification server. The tracing device is coupled with a first satellite localization receiver which is configured to receive signals from a satellite localization system, process the received signals to obtain satellite localization observables, and compute locations based on the satellite localization observables. The tracing device is configured to acquire from the first satellite localization receiver positioning data. The positioning data comprise a location computed by the first satellite localization receiver, and a location time which represents time and data at which the location is computed by the first satellite localization receiver. The positioning data are related to a product and/or an activity to be tracked. The tracing device is further configured to select a satellite localization observable based on which location is computed by the first satellite localization receiver, and to acquire from the satellite localization receiver the selected satellite localization observable. The tracing device is further configured to provide the verification server with the positioning data and the satellite localization observable acquired from the satellite localization receiver. Moreover, the verification server, in turn, is configured to perform a location consistency check based on the location comprised in the positioning data provided by the tracing device, and on the satellite localization observable provided by the tracing device. The verification server is further configured to generate a validation code on the basis of an outcome of the location consistency check, and on the basis of the positioning data provided by the tracing device. The verification server is further configured to provide the tracing device with the generated validation code. Furthermore, the tracing device is configured to store the positioning data and the validation code provided by the verification server on tracking means associated with the product and/or the activity to be tracked. | 10-20-2011 |
20110260913 | Method for Adjusting a Measurement Cycle in a Satellite Positioning System Signal Receiver - A method for adjusting a measurement cycle in a satellite signal receiver is described. The method includes adjusting a measurement cycle in a satellite signal receiver by computing a position state comprising at least one of a velocity and a heading of the satellite signal receiver, detecting a change in the position state, and automatically adjusting a frequency of said measurement cycle in response to the change in the position state. | 10-27-2011 |
20110273327 | Method and Apparatus for Fast TTFF - A data model containing orbital parameters is stored in a mobile device. When a First Fix is required by a GNSS system within the mobile device, these stored orbital parameters are used to rapidly generate accurate satellite trajectory data model. The stored orbital parameters may be modified in part or in whole as required by changing coefficients of the stored parameters. | 11-10-2011 |
20110279310 | RADIO WAVE RECEIVING APPARATUS AND POSITION CALCULATING METHOD - A radio wave receiving apparatus includes a plurality of antennas disposed on a circuit board, the plurality of antennas having radiation patterns with different bearings and which indicate a directivity of said antennas upon receipt of radio waves, a storage unit for storing information of the radiation patterns of the plurality of antennas, a detector for detecting a change in the attitude of the circuit board, and a controller for determining a distribution ratio for reception signals received by the plurality of antennas based on the information stored in the storage unit which corresponds to the attitude of the circuit board detected by the detector. | 11-17-2011 |
20110279311 | SYSTEMS AND METHODS FOR PROVIDING MEDIA CONTENT LISTINGS ACCORDING TO POINTS OF INTEREST - Systems and methods are provided for allowing a user to obtain a listing of points of interest and associated media content listings based on the user's current geographic location. The user's current geographic location may be determined using, for example, a GPS transceiver incorporated in the user's user access device. Information may then be communicated from a remote server to the user access device that identifies points of interest associated with the geographic location as well as media content listings associated with the points of interest. | 11-17-2011 |
20110285584 | Handheld Antenna Attitude Measuring System - An antenna attitude measuring system includes internal and external electrical components providing data for recording and displaying on a handheld device. The data can be transmitted to a database for access by a network operator. The antenna attitude can be adjusted for maximizing telecommunications network performance. | 11-24-2011 |
20110291881 | POSITION CALCULATING METHOD AND POSITION CALCULATING DEVICE - There is provided a position calculating method including: calculating a pseudorange by receiving a satellite signal from a positioning satellite; and calculating a position using a normal mixture distribution model which expresses distribution of an error included in the pseudorange with normal mixture distribution. | 12-01-2011 |
20110298657 | TRANSMITTING APPARATUS AND RECEIVING APPARATUS FOR TRACKING POSITION USING GPS AND THE METHOD THEREOF - A method of tracking a position of a transmitting apparatus in a sensor network is provided. The transmitting apparatus may receive Global Positioning System (GPS) information from each of satellites, may extract satellite time information and satellite identification information from the GPS information, may generate a transmission frame together with receiving time information and apparatus identification information, and may transmit the transmission frame to a receiving apparatus. | 12-08-2011 |
20110309975 | Firearm Global Satellite Positioning System Tracking System - A firearm GPS (Global Positioning System) tracking system, in which a GPS tracker is disposed within a firearm, and the GPS tracker is provided with a GPS receiving circuit, a microprocessor, a wireless transmission circuit and a detector. The detector is able to detect various operational circumstances of the firearm, moreover, detected information is transmitted to the microprocessor. Furthermore, the GPS receiving circuit receives geographic position satellite coordinate signals, which are matched with data prestored within a geographic data base to obtain the position of the firearm, whereupon the position is transmitted to the microprocessor. Accordingly, the microprocessor receives the position of the firearm from the GPS receiving circuit, and obtains the operational circumstances of the firearm from the detector, whereupon the information is transmitted to a remote server using the wireless transmission circuit for reference thereof. | 12-22-2011 |
20110309976 | INTERMITTENT TRACKING FOR GNSS - A GNSS system operates intermittently and has adaptive activity and sleep time in order to reduce power consumption. The GNSS system provides an enhanced estimate of its position in the absence of GNSS signals of sufficient strength. The user's activity and behavior is modeled and used to improve performance, response time, and power consumption of the GNSS system. The user model is based, in part, on the received GNSS signals, a history of the user's positions, velocity, time, and inputs from other sensors disposed in the GNSS system, as well as data related to the network. During each activity time, the GNSS receiver performs either tracking, or acquisition followed by tracking. The GNSS receiver supports both normal acquisition as well as low-power acquisition. | 12-22-2011 |
20110309977 | POWER REDUCTION IN WIRELESS APPLICATIONS - A mobile tracking device is provided that monitors or measures one or more signals from GPS satellites and remote wireless base stations during a GPS acquisition process and a registration process, and terminates the process(es) prior to reaching a default timeout when the signals do not meet a predetermined threshold or value. Instead of continuing the acquisition and/or registration process for the full timeout period when the received signals (if any) indicate there is a low probability of successfully completing the particular process, the tracking device early terminates the process(es). This saves or reduces power by preventing the continued operation of the particular process when it is likely to be unsuccessful. | 12-22-2011 |
20110316736 | LOCATING SATELLITES - A system and method of locating the position of a satellite or a user using a satellite positioning system. The system and method includes receiving, at a terminal, satellite positioning data for at least one specified time period over a communications channel. In addition, the system includes storing, at the terminal, the satellite positioning data for the at least one specified time period. Responsive to an event at a later time, the system generally calculates, at the terminal, the satellite position at the later time based only on the satellite positioning data for the at least one specified time period. | 12-29-2011 |
20120007774 | METHOD AND SYSTEM FOR SELECTING OPTIMAL SATELLITES IN VIEW - A system and method for determining one or more satellites in view of a wireless device. A request for satellite assistance data may be received from a requesting entity and a reference location determined as a function of the request. A set of satellites may be determined as a function of the reference location. Subsequent cached information may be determined for each satellite in the set of satellites if cached information already existing for each satellite in the set of satellites has been cached for greater than a predetermined time period. This subsequent cached information may then replace the previously existing cached information for the reference location. One or more satellites in view of the wireless device may then be determined as a function of either the subsequent cached information or previously existing cached information, and assistance data may be provided to the requesting entity to determine an estimated location of the wireless device. | 01-12-2012 |
20120026033 | POSITION CALCULATION METHOD AND APPARATUS WITH GPS - A GPS position calculating apparatus is configured to acquire orbit information from navigation data contained in signals transmitted from GPS satellites, the orbit information including a position, clock time and orbital speed of each GPS satellite at a transmission time of each signal, to calculate a position of each GPS satellite at a reception time of the same signal at a measurement point, from the acquired orbital speed and clock time, to calculate a range of a line segment connecting the calculated position of each GPS satellite with a position of the measurement point using a time difference between the transmission time and the reception time, and to calculate the position of the measurement point using the calculated range of the line segment as a pseudorange. A GPS position calculating method carried out by the apparatus is also disclosed. | 02-02-2012 |
20120026034 | POSITION CALCULATION METHOD AND APPARATUS WITH GPS - A GPS position calculating apparatus is configured to acquire from navigation data contained in signals transmitted from GPS satellites, orbit information including a position, clock time, orbital speed and altitude of each GPS satellite at a transmission time of each signal from a respective one of the GPS satellites, then calculate a position of each GPS satellite at a reception time of the same signal at a measurement point on the basis of the acquired orbital speed and a time difference between the reception time and the transmission time, further calculate a first angle of the horizon relative to a first line segment connecting the second position of each GPS satellite with a position of the measurement point on the basis of a range of the first line segment and the acquired altitude, subsequently calculate a range of a second line segment connecting the first position of each GPS satellite with the position of the measurement point on the basis of the range of the first line segment, the first angle, and the orbital speed, and finally perform calculation of the position of the measurement point. A GPS position calculating method carried out by the apparatus is also disclosed. | 02-02-2012 |
20120038509 | Receiver for GPS-Like Signals - A module for receiving a plurality of signals that are modulated with a common carrier, where each of the signals includes information that enables a determination of a distance from said receiver to a source that transmits the signal, and outputs to outside the module a digital representation of a downshifted replica of the received signals or, alternatively, outputs a stored and delayed version of the downshifted replica of the received signals together with information about the delay. | 02-16-2012 |
20120044106 | APPARATUS AND METHOD FOR MEASURING SPATIAL MOVEMENTS OF PLANT STRUCTURES - An apparatus and method for measuring spatial movements of plant structures, such as pipes, due for example to movement of the ground in presence of landslide phenomena, subsidence, collapse, or differential settling. The measuring apparatus includes at least one ground station that communicates with at least one corresponding signal-sending satellite station, the ground station being connected in a movable manner to a support constrainable in a fixed manner to the plant structure, the ground structure having an initial azimuthal orientation and an initial azimuthal height. The ground station is moved with respect to the support via a mechanism for adjusting the orientation and height of the same to compensate for an instantaneous orientation and height that are different from the initial orientation and height. | 02-23-2012 |
20120062414 | POSITIONING APPARATUS, POSITIONING METHOD, AND STORAGE MEDIUM FOR MEASURING POSITION USING BOTH AUTONOMOUS NAVIGATION AND GPS - A positioning apparatus including: a first positioning unit which intermittently receives signals from satellites and carries out a first position measurement; a second positioning unit which carries out a second position measurement by adding information of a moving direction and a moving amount to positional information of a reference position; a positioning control unit which obtains positional information corresponding to positions along a movement path by the first position measurement and the second position measurement; a reference position updating unit which updates the positional information of the reference position based on a result of the first position measurement; a distance calculating unit which calculates a distance between two positions, i.e., between the reference position and a position obtained by the second position measurement; and a positioning timing control unit which controls timing to carry out the first position measurement based on the distance. | 03-15-2012 |
20120068883 | Method for GNSS Coexistence - A method for operating a wireless transmitter and a global navigation satellite (“GNSS”) receiver coexistent in a mobile wireless device. A mobile wireless device includes a GNSS receiver and a wireless networking system. The wireless networking system includes a wireless transmitter. The wireless transmitter provides a first interference level signal to the GNSS receiver. The first interference level signal indicates a level of interference that the GNSS receiver can expect due to operation of the transmitter. A priority signal is asserted if the processing of navigation signals in the GNSS receiver takes precedence over wireless transmitter transmissions. | 03-22-2012 |
20120086598 | APPARATUS AND METHODS FOR DRIFTLESS ATTITUDE DETERMINATION AND RELIABLE LOCALIZATION OF VEHICLES - In order to determine positional information, about a mobile robot, Real Time Kinematic (RTK) Global Satellite Navigation System (GNSS) measurement data are obtained by at least two GNSS receivers mounted on the mobile robot. Estimates of the covariance matrices of the measurement data are computed. The RTK GNSS measurement data are combined according to the covariance matrices to obtain enhanced positional information. The results may be fused with data from an IMU to obtain driftless attitude and/or localization information. | 04-12-2012 |
20120092214 | METHOD OF RECEIVING GNSS SIGNAL AND APPARATUS THEREOF - A method of receiving a global navigation satellite system (GNSS) signal in a GNSS reception apparatus is provided. The method includes the steps of: measuring channel quality for each frequency band; selecting a plurality of reception channels by using the measured channel quality; reconfiguring an operating parameter of the reception apparatus in accordance with the reception channel; and receiving a signal by using the reconfigured operating parameter. | 04-19-2012 |
20120098699 | Method and System for the Geolocation of a Radio Beacon in a Search and Rescue System - A method for the geolocation of a device transmitting a signal containing at least one message to a plurality of relay satellites in a medium earth orbit, visible from said device, receiving said message and transmitting it to processing means, comprises at least the following steps: determination of the times of reception of the message by the relay satellites; determination of the pseudo-distances between the device and the relay satellites; searching for and acquiring a minimum number N of satellite radio navigation signals; determination of the time lags between the transmission of the radio navigation signals and their reception by the said device; broadcasting by the device of these time lags in the message; and, determination of the position of the device from at least the pseudo-distances, from the time lags and from the positioning coordinates of the relay satellites and of the radio navigation satellites. | 04-26-2012 |
20120105280 | SYNCHRONIZED MEASUREMENT SAMPLING IN A NAVIGATION DEVICE - In a hot start mode of a navigation device, the process of obtaining pseudo-range measurements can be synchronized with the processes of tracking navigation satellites and initializing a positioning unit to compute a position, velocity, and time (PVT) solution of the navigation device. This can influence a time instant at which the pseudo-range measurements are determined and a time to first fix, depending on whether the navigation device is in a strong or weak signal environment. A measurement unit can receive a first indication that a predetermined number of navigation satellites have been acquired and that navigation signals transmitted by the acquired navigation satellites have been locked. The measurement unit can receive a second indication that the positioning unit has been initialized to compute the PVT solution. In response to receiving both indications, the measurement unit can obtain the pseudo-range measurements. Accordingly, the positioning unit can compute the PVT solution. | 05-03-2012 |
20120105281 | Method and Apparatus for Distribution of Satellite Navigation Data - A method and apparatus for distributing satellite navigation data is described. In one example, satellite signals are processed at each of a plurality of reference stations to receive a respective plurality of satellite navigation data streams. Packets are formed in response to said plurality of satellite navigation data streams to generate a plurality of packetized satellite navigation data streams. The packetized satellite navigation data streams are sent to a processing system. The processing system removes duplicate packets within said plurality of packetized satellite navigation data streams to generate a combined packet stream. The combined packet stream is then sent into a communication network. | 05-03-2012 |
20120105282 | Method And Apparatus For Determination Of The Positioning Of An Apparatus Or An User From Satellite Signaling - Method and apparatus for the calculation of the positioning from satellite signals, wherein the results of a first satellite signal (M | 05-03-2012 |
20120133553 | DATA ACCESS AND MANAGEMENT USING GPS LOCATION DATA - Disclosed are methods, systems and products, including a method that includes maintaining a plurality of records associated with a plurality of objects, the plurality of records are configured to include global positioning system (GPS)-based data representative of locations of the plurality of objects. The method also includes accessing at least one of the plurality of records based, at least in part, on determined global position system-based data representative of location of at least one object associated with the at least one of the plurality of records. | 05-31-2012 |
20120133554 | METHOD AND SYSTEM FOR PROCESSING POSITIONING SIGNALS BASED ON PREDETERMINED MESSAGE DATA SEGMENT - A method and system for determining a geolocation of an object includes collecting a positioning signal including a predetermined message data segment. A time of arrival of the predetermined message data segment may be determined in the positioning signal. Information based on the time of arrival may be provided for determination of a geolocation of an object. The time of arrival of the predetermined message data segment may be determined based on a time search for the predetermined message data segment in the positioning signal. | 05-31-2012 |
20120139783 | Position Determining System Incorporating One or More Global Navigation Satellite System (GNSS) Antennas - A system for determining position, velocity, time, and/or altitude of a vehicle of object using GNSS under a broad range of dynamic conditions. The system may utilize a plurality of antennas in some aspects. In some aspects, the system may operate in a differential mode incorporating a fixed or mobile base station. In some aspects, the system may be connected to a smart phone, tablet, or other mobile computing device. | 06-07-2012 |
20120146848 | GPS SIGNAL QUALITY UTILIZE POWER REDUCTION - According to various embodiments, a method is disclosed that includes determining a speed of a mobile device based on one or more global positioning signals; and controlling a global positioning module of the mobile device based on the determined speed. | 06-14-2012 |
20120154211 | ELECTRONIC DEVICE FOR TRACKING AND MONITORING OF TOPOGRAPHY EQUIPMENT - An electronic device having a system for tracking and monitoring to recover and/or service topography equipment. The electronic device is hidden within the topography equipment by a certified technician and is registered in an operating center. When desired by the operating center, a SIM card connects through a cell phone carrier to enable monitoring and geographic localization of the topography equipment by the operating center, whereby a GPS antenna receives the signal from a satellite via a modem. Therefore, the owner, authorized personnel and/or police officer(s) can then track the signal and locate the topography equipment for recovery and/or service maintenance. | 06-21-2012 |
20120154212 | Receive Diversity in GNSS Receivers - The subject matter disclosed herein relates to receiving one or more SPS signals at two or more physically separated antennae. In an aspect, signals from the physically separated antennae may be downconverted into complex digital signals that may undergo further processing to improve one or more performance metrics related to position estimation operations, for example. | 06-21-2012 |
20120154213 | Interference Detection, Characterization and Location in a Wireless Communications or Broadcast System - A Wide Area Sensor Network (WASN) is disclosed that utilizes wideband software defined radios (SDRs) to monitor RF energy over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. The WASN may use one or more geolocation techniques In addition, the WASN may detect and locate unauthorized transmitters as well as estimate the transmitted power of authorized transmitters to assure they are not transmitting more power than authorized. | 06-21-2012 |
20120200455 | USE OF GPS TO DETECT REPETITIVE MOTION - A system mounted to an object for detecting repetitive motion of the object. The system includes a GPS receiver for receiving GPS signals while being maneuvered in a repetitive motion by the object, and a processor for detecting repetitive phase shifts in the received GPS signals. In general, the system computes the repetitive motion of the GPS receiver based on the repetitive phase shifts. | 08-09-2012 |
20120200456 | SYSTEM HAVING DOPPLER-BASED CONTROL OF A MOBILE DEVICE - Embodiments of the present invention recite a system having Doppler-based control of a mobile device. In one embodiment, at least one measured Global Navigation Satellite System (GNSS) Doppler frequency shift measurement corresponding to a GNSS signal measured at a mobile electronic device is received. The speed of the remote device is then determined based at least in part upon the GNSS Doppler frequency shift measurement. An operation of the remote device is then controlled from the base station when the speed of the remote device exceeds a speed threshold. | 08-09-2012 |
20120206294 | Samsung Electronics Co., Ltd. - A Global Positioning System (GPS) receiver includes a GPS receiving unit configured to receive navigation data from at least one visible satellite, a decoder configured to decode the received navigation data to extract time and almanac information from the decoded navigation data and a database configured to store satellite disposition information. A satellite location determining unit is configured to select at least one visible satellite candidate using the time information and the satellite disposition information, and to determine locations-in-space of the at least one visible satellite candidate with the almanac information. Also, a navigation filter is configured to calculate pseudo-ranges from the at least one visible satellite and the selected at least one visible satellite candidate using the corresponding locations-in-space, and to determine a location of the GPS receiver using the calculated pseudo-ranges. | 08-16-2012 |
20120218144 | MOBILE STORAGE UNIT - A mobile storage unit is disclosed. The mobile storage unit includes a rigid exo-skeletal frame and a flexible storage bag that couples to the rigid exo-skeletal frame while within an open storage region framed by the exo-skeletal frame. The mobile storage unit also includes a top seat portion and stabilizing features that extend and retract from the rigid exo-skeletal frame to support the mobile storage unit in the upright position. The mobile storage unit can also include a monitoring device for transmitting signals that are used to determine the location of the mobile storage unit. | 08-30-2012 |
20120229332 | Indicating Quality of GNSS Position Fixes - Methods and apparatus are provided for reporting quality of GNSS position fixes. A desired quality mode selection is obtained. Position fixes with respective precision estimates and satellite tracking information are obtained. For each of a plurality of position fixes a current positioning quality is determined, based on the precision estimates and satellite tracking information and quality mode selection. Current positioning quality is reported. The quality selection can be a preference of availability over accuracy, or accuracy over availability, or a balance of availability and accuracy. | 09-13-2012 |
20120249367 | SATELLITE-BASED POSITIONING SYSTEM IMPROVEMENT - A method, device and system for determining a receiver location using weak signal satellite transmissions. The invention involves a sequence of exchanges between an aiding source and a receiver that serve to provide aiding information to the receiver so that the receiver's location may be determined in the presence of weak satellite transmissions. With the aiding information, the novel receiver detects, acquires and tracks weak satellite signals and computes position solutions from calculated pseudo ranges despite the inability to extract time synchronization date from the weak satellite signals. The invention includes as features, methods and apparatus for the calibration of a local oscillator, the cancellation of cross correlations, a Doppler location scheme, an ensemble averaging scheme, the calculation of almanac aiding from a table of orbit coefficients, absolute time determination, and a modified search engine. | 10-04-2012 |
20120256789 | Diversity Time and Frequency Location Receiver - A Wide Area Sensor Network is disclosed that utilizes wideband software defined radios (SDRs) to provide a capability to monitor the airwaves over a wide frequency range, detect when critical frequencies are being jammed or otherwise interfered with, and locate the source of the interference so that the interference can be eliminated. In addition, a diversity receiver is disclosed. The diversity receiver generates position, time and frequency references for use in locating and synchronizing sensor platforms of a WLS. In an illustrative embodiment, the diversity receiver comprises a first receiver subsystem comprising a terrestrial broadcast receiver, and a common processor platform (CPP) coupled via first link means to the first receiver subsystem. The first receiver subsystem provides a stable time reference and position information to the CPP via the first link means. In addition, the diversity receiver includes second link means for coupling the diversity receiver to a sensor platform and providing time and frequency references and location data to the sensor platform. | 10-11-2012 |
20120274508 | Athletic Watch - A device for monitoring athletic performance of a user has a wristband configured to be worn by the user. The electronic module may include a controller and a screen and a plurality of user inputs operably associated with the controller. The user inputs may include a user input configured to be applied by the user against the screen and in a direction generally normal to the screen. The controller may further be configured to generate one or more user interfaces in response to various user inputs and conditions. For example, the controller may generate workout mode interfaces and non-workout mode interfaces including various goal information, workout data, reminders and the like. In one or more arrangements, multiple types of information may be displayed simultaneously. | 11-01-2012 |
20120274509 | GNSS RECEIVER AND METHOD FOR DETERMINING WHETHER TO SWITCH FROM ONE OPERATION STATE TO ANOTHER OPERATION STATE ACCORDING TO STATE SWITCHING CRITERION AND POSITIONING INFORMATION - A method for controlling a global navigation satellite system (GNSS) receiver operated in a first operation state includes: providing a state switching criterion; obtaining a positioning information; determining whether to switch from the first operation state to a second operation state according to the obtained positioning information and the state switching criterion, wherein the power consumption of the GNSS receiver operating under the first operation state and the second operation state is different. | 11-01-2012 |
20120293365 | SATELLITE SIGNAL MULTIPATH MITIGATION IN GNSS DEVICES - A method for mitigating the effects of multipath errors in GNSS devices is provided. Signals from GNSS satellites are received. Image data from an image sensor is received. Orientation data from an orientation sensor is received. The orientation data describes the orientation of the image sensor. Obstruction data is determined based on the image data. The obstruction data includes an obstruction region that indicates the sky in that region is obstructed by a structure. Based on the orientation data, obstruction data, and GNSS satellite location data, the position of GNSS satellites with respect to the obstruction region is determined. The location of the GNSS device is determined based on signals from some of the GNSS satellites and the position of GNSS satellites with respect to the obstruction region. | 11-22-2012 |
20120299770 | METHOD OF CALCULATING POSITION OF GPS RECEIVER, RECORDING MEDIUM HAVING RECORDED THEREON PROGRAM FOR PERFORMING THE SAME, AND GPS RECEIVER - A method of calculating a position of a GPS receiver, a recording medium having recorded thereon a program for performing the method, and a GPS receiver are discussed. The method includes causing a control unit to combine a plurality of satellite signals received through the use of a receiver unit and to create a plurality of satellite signal groups; selecting a low-error satellite signal group not including any GPS satellite signal causing a reflection error or including the GPS satellite signal causing a reflection error as little as possible by the use of pseudoranges based on the GPS satellite signals included in the satellite signal groups; detecting the GPS satellite signal not included in the low-error satellite signal group as a reflected satellite signal; and calculating a positional coordinate of the GPS receiver by the use of the GPS satellite signals other than the reflected satellite signal. | 11-29-2012 |
20120306688 | GPS MAPPING SYSTEM AND METHOD FOR USE BY HUNTERS, CAMPERS AND OUTDOOR ENTHUSIASTS - A tracking and mapping system for outdoor use includes a first GPS locator located either at a base station or on a hunting accessory such as an arrow. The system also includes a second GPS locator for identifying a user's location, and an electronic display unit for communicating with a global positioning satellite and displaying a map showing icons representing locations of the first and second GPS locators. The second GPS locator may be embedded in the electronic display unit, which may be a mobile wireless handheld device, a tablet or other portable computer having wireless connectivity. The electronic display unit maps the present location of each of the GPS locators in relation to a direction such as north, south, east or west. Optionally, separate GPS locators may be placed at a base station and in an arrow. A method of using the tracking and mapping system is also described. | 12-06-2012 |
20120306689 | HYBRID SATELLITE POSITIONING WITH PREDICTION - A method of calculating two position fixes, using satellite positioning. The method comprises: using an RF front-end ( | 12-06-2012 |
20120306690 | SATELLITE POSITIONING WITH ASSISTED CALCULATION - A method of calculating a position fix from satellite signal samples. The method comprises: obtaining first reference information produced during the calculation ( | 12-06-2012 |
20120313816 | PHASE RATE OF CHANGE TECHNIQUES FOR PASSIVE GEO-LOCATION OF RADIO FREQUENCY EMITTERS - The present invention relates to a system for resolving phase ambiguities in phase rate of change (PROC) measurements of a long baseline interferometer (LBI). The system includes an LBI having a first antenna and a second antenna positioned on a vehicle to receive the RF signal transmitted by the RF emitter, and a processor positioned on the vehicle. The processor is configured to determine a first phase rate of change (PROC) of the RF signal received by the LBI over a short time interval to produce a short time interval range estimate of the RF emitter, determine a second PROC of the RF signal received by the LBI over a long time interval which is greater than the short time interval, to produce a plurality of ambiguous long time interval range estimates of the RF emitter, and c) select one of the plurality of long time interval range estimates based on the short time interval range estimate. | 12-13-2012 |
20130002478 | Location Fix From Unknown Position - An apparatus for determining a location of a receiver by using signals received by the receiver from a number of satellites, the apparatus being configured to, when the receiver has been unable to decode a time-of-transmission from the satellite signals, determine a location for the receiver by use of an algorithm that takes an estimate of the location of the receiver as an input, and, when an estimate of the location of the receiver is unavailable, determine an approximate location of the receiver in dependence on the satellite signals and input that approximate location into the algorithm as the estimate of the location of the receiver. | 01-03-2013 |
20130002479 | Determining Position - Apparatus for calculating the position of a receiver in dependence on the time it takes signalling events to travel from a plurality of satellites to the receiver, obtains an indication of a transit time for a signalling event to travel from each satellite to the receiver, and forms an indication of an expected transit time for a signalling event to travel from the satellite to the receiver. The obtained indication of the transit time and the indication of the expected transit time for each non-reference satellite are compared with the obtained indication of the transit time and the indication of the expected transit time for the reference satellite to form residuals that are representative of a combined error in those indications of expected transit time; and the position of the receiver is calculate without calculating the integer ambiguities in the obtained transit times, in dependence on the residuals. | 01-03-2013 |
20130002480 | Reference Satellite - An apparatus for determining the location of a receiver in dependence on signalling events transmitted to the receiver by a satellite constellation comprising a reference satellite and one or more other satellites, the apparatus being arranged to, for each of the one or more satellites, compare an indication of the transit time of the signalling event transmitted by that satellite and an indication of the transit time of the signalling event transmitted by the reference satellite and calculate the location of the receiver in dependence on those comparisons; the apparatus being further arranged to determine, for each of the satellites in the constellation, an indication of an error that would be incorporated in the comparisons if that satellite were selected as the reference satellite and to designate one of the satellites in the constellation as the reference satellite in dependence on those indications. | 01-03-2013 |
20130002481 | AUTONOMOUS TRACKING DEVICE FOR VEHICLE - An autonomous tracking device ( | 01-03-2013 |
20130009810 | METHODS AND SYSTEMS FOR DERIVING SEED POSITION OF A SUBSCRIBER STATION IN SUPPORT OF UNASSISTED GPS-TYPE POSITION DETERMINATION IN A WIRELESS COMMUNICATION SYSTEM - In a method and system for deriving a seed position of a subscriber station in a wireless communications system in supporting unassisted GPS-type position determination is provided, the subscriber station receives overhead messages from the wireless communications system, and derives the seed position from the parameter values. The subscriber station may use a data structure in its memory and map possible parameter values to corresponding positions that may serve as the seed positions. | 01-10-2013 |
20130009811 | Method and System for Maintaining a GNSS Receiver in a Hot-Start State - A GNSS receiver in a wake up state during a standby mode may acquire ephemeris from received GNSS signals such as GPS signals and/or GLONASS signals. When subsequently transitioning from the standby mode to a normal mode operating at a high frequency clock, the acquired ephemeris may be utilized to generate a navigation solution for the GNSS receiver. The GNSS receiver in the wake up state during the standby mode may be switched to operate at the high frequency clock in order to receive GNSS signals. The GNSS receiver may extract complete ephemeris from the received GNSS signals, and may subsequently transition from the wake up state to a sleep state during the standby mode to save power. Radio frequency front-end components of the GNSS receiver may only be turned on to receive the GNSS signals. The GNSS receiver may transition between the standby mode and the normal mode. | 01-10-2013 |
20130016005 | Accuracy Assessment in Assisted GPS Positioning - Reliable and efficient search windows are provided by allowing the adaptation of the code search window to be dependent on inaccuracy measures of relations between a cellular frame time and a satellite reference time. This inaccuracy is calculated in a positioning node of the cellular communications system, preferably by filtering of measurements received from user equipments. Linear trend Kalman filtering followed by post processing of estimation errors may be utilized. In order to ensure non-ambiguous interpretation of the received time stamps of received satellite signals provided by user equipments, a pseudo propagation delay is computed in both the user equipment and the positioning node based on GPS acquisition assistance data. The GPS time stamp is then defined referring to the determined pseudo propagation delay. In one embodiment, the pseudo propagation delay is assured to be situated within a pre-determined time interval. | 01-17-2013 |
20130016006 | REMOTE VISUALIZATION OF BAND-SPECTRUM INTERFERENCE FOR A GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER - An apparatus for determining signal strength data within allocated GNSS frequency band(s) is provided. The apparatus includes a GNSS antenna. The GNSS antenna receives signals within the allocated GNSS frequency band. The apparatus further includes receiving circuitry. The receiving circuitry is for demodulating the received signals. The apparatus further includes a processor and memory for storing instructions, executable by the processor. The instructions include instructions for generating signal strength data for the received signals within the GNSS allocated frequency based on the demodulated signals, and for determining a position for a point of interest based upon the demodulated signals. Included in the apparatus is a display screen for displaying a graphical representation of the signal strength data of at least a portion of the at least one GNSS allocated frequency band. The graphical representation identifies interference within at least the portion of the at least one GNSS allocated frequency band. | 01-17-2013 |
20130021198 | Convergence Zone - Apparatus for calculating the location of a receiver in a satellite navigation system, the apparatus being arranged to calculate a location of the receiver by means of an algorithm that utilises an estimate of receiver location and/or an estimate of absolute time, the apparatus being arranged to perform the calculation in such a way as to extend a convergence zone within which the algorithm is capable of generating the correct location for the receiver despite an error in the estimate(s). | 01-24-2013 |
20130027245 | MITIGATING MULTIPATH USING STATE TRANSITION DETECTION AND MEASUREMENT - A global positioning satellite (GPS) receiver that includes a radio frequency (RF) receiver receiving a first GPS signal from a GPS satellite and a processor. The processor is configured to correlate the first GPS signal with a plurality of reference signals to produce a plurality of correlations, detect a transition between receiving the first GPS signal and receiving a second GPS signal from the GPS satellite based on a phase shift in the correlations, and if the transition is detected, compensate for the phase shift when computing a range to the GPS satellite. | 01-31-2013 |
20130027246 | METHOD AND APPARATUS FOR RECEIVING POSITIONING SIGNALS BASED ON PSEUDORANGE CORRECTIONS - A receiver for receiving positioning signals from a plurality of sources obtains a pseudorange correction for each source by obtaining an initial pseudorange to each source, an initial value of a positioning parameter based on the initial pseudoranges, a difference between the initial value of the positioning parameter and a reference value of the positioning parameter, a parameter error for each one of the sources, and the pseudorange correction for each source based on the difference between the initial and the reference values of the positioning parameter, the parameter error for the source and the value. | 01-31-2013 |
20130033395 | DUAL COAXIAL NSS RECEIVER SYSTEM - A dual coaxial NSS receiver system is disclosed. One embodiment receives first location information about a first navigation satellite system (NSS) antenna mounted on an object at a first location. In addition, second location information is received from a second NSS antenna mounted on the object in a second location different from the first location. A spatial relationship is determined between the first NSS antenna, the second NSS antenna and a portion of the object. The first location information, the second location information and the spatial relationship are then utilized to determine the spatial location of the portion of the object. | 02-07-2013 |
20130044025 | SATELLITE-BASED POSITIONING METHOD - A satellite-based positioning method is applicable in a Global Positioning System (GPS) receiver. The satellite-based positioning method includes the steps of obtaining multiple satellites in use by searching; calculating every satellite vector between each of the satellites in use and the GPS receiver; selecting three of the satellites in use in sequence as a satellite candidate set, searching for one of the satellite candidate set forming a geometric error relation according to the multiple satellite vectors, and using at least one of the satellites in use in the satellite candidate set forming the geometric error relation as a first satellite; searching for at least one second satellite in the satellites in use, wherein a signal strength varied rate of the second satellite is greater than a varied rate threshold; and using the satellites in use having the first satellite or the second satellite removed to perform positioning. | 02-21-2013 |
20130050019 | TRACKING APPARATUS FOR BAGGAGE - Embodiments of the present invention provide an apparatus for tracking an item transported with the apparatus. The apparatus comprises a global positioning system (GPS) module for determining a location of the item based on GPS signals received from one or more GPS satellites. The apparatus further comprises a mobile communications controller for generating a message including the determined location of the item, wherein the mobile communications controller sends the generated message to at least one mobile device. The mobile communications controller may also send the generated message to a remote server maintaining location tracking information for one or more items. | 02-28-2013 |
20130063300 | METHOD, SYSTEM, AND MACHINE TO TRACK AND ANTICIPATE THE MOVEMENT OF FLUID SPILLS WHEN MOVING WITH WATER FLOW - The present invention relates to systems, methods, and machines for tracking a fluid spill. The method includes obtaining real-time location data for a number of tracking devices from a positioning satellite data repository, integrating the location data of each of the tracking devices into a comprehensive spatial data repository, determining a deployment location for each of the tracking devices, identifying, responsive to the deployment locations, a fluid-spill subset of the tracking devices that were deployed in the fluid spill, determining a fluid spill location based on the geographic locations of the fluid-spill subset, and generating a geographic map depicting the fluid spill location. A new sensor-driven paradigm is used that combines practical data gathering methods with advanced enterprise information technologies. The sensor-driven paradigm provides real-time situational awareness to emergency responders and executive stakeholders working from remote locations during an oil spill or chemical fluid release. | 03-14-2013 |
20130082872 | POSITION VALIDATION - A method of determining an indication of the position of an electronic device. The method comprises: obtaining ( | 04-04-2013 |
20130099961 | WIRELESS COMMUNICATION APPARATUS - A wireless communication apparatus may include an instruction unit that instructs a peripheral terminal to acquire a navigation message transmitted from a global positioning system (GPS) satellite, an acquisition unit that acquires the navigation message, which has been acquired by the peripheral terminal, from the peripheral terminal, and a calculation unit that carries out a positioning calculation by using the navigation message acquired by the peripheral terminal. | 04-25-2013 |
20130106652 | Method And System For A Dual Mode Global Navigation Satellite System | 05-02-2013 |
20130113654 | AMELIORATION OF FREQUENCY ERRORS AND/OR THEIR EFFECTS - A radio communications device comprising location finding means for determining the device's location based on satellite signals, a crystal oscillator whose output frequency acts as a controlling reference for the location finding means and processing means for intermittently correcting the crystal oscillator such that the output frequency experiences jumps. The location finding means is arranged to take account of the jumps in the determination of the device's location. | 05-09-2013 |
20130135143 | METHOD FOR POSITIONING DETERMINATIONS OF RECEIVERS - The disclosed method and system is used to determine the position of a user device. The user device can receive data signals and/or carrier signals from orbiting space vehicles. These data signals can be used for positioning calculation and/or track maintenance of the user device. The disclosed method and system can account for time and frequency biases of the user device. For the track maintenance, a Kalman filter state estimator can be extended to include a velocity of the user device. | 05-30-2013 |
20130135144 | SYNCHRONIZED MEASUREMENT SAMPLING IN A NAVIGATION DEVICE - In a hot start mode of a navigation device, the process of obtaining pseudo-range measurements can be synchronized with the processes of tracking navigation satellites and initializing a positioning unit to compute a position, velocity, and time (PVT) solution of the navigation device. This can influence a time instant at which the pseudo-range measurements are determined and a time to first fix, depending on whether the navigation device is in a strong or weak signal environment. A measurement unit can receive a first indication that a predetermined number of navigation satellites have been acquired and that navigation signals transmitted by the acquired navigation satellites have been locked. The measurement unit can receive a second indication that the positioning unit has been initialized to compute the PVT solution. In response to receiving both indications, the measurement unit can obtain the pseudo-range measurements. Accordingly, the positioning unit can compute the PVT solution. | 05-30-2013 |
20130141277 | Adding Multi-System Functionalities to Legacy Navigation Satellite System Receivers - Methods and apparatuses are disclosed for enabling a satellite-based navigation signal receiver to support multiple types of global navigation satellite systems (GNSS). A legacy GNSS receiver can support a plurality of GNSS types by software upgrade and with a new/modified radio frequency (RF) chip. There is no need to completely redesign a navigation host chip to support the multiple GNSS types. This invention offers a cost-efficient multi-GNSS solution without sacrificing the navigation performance. A GNSS baseband controller controls synchronization of measurement time for digitized data along a first signal processing path for a legacy GNSS signal and a second signal processing path for a non-legacy GNSS signal. | 06-06-2013 |
20130154878 | Resampling a Signal to Perform Synchrophasor Measurement - Performing power quality and synchrophasor analysis on a resampled signal. A first signal may be initially received which corresponds to a power system. The first signal may have a plurality of cycles and may have a frequency that varies over time. One or more parameters may be determined from the first signal. Based on the one or more parameters, the first signal may be resampled to produce an even angle signal. Various power quality measurements may be performed on the even angle signal. Similarly, further processing may be performed to perform synchrophasor measurements, e.g., to determine phasor, frequency, and/or rate of frequency change for the first signal. In some embodiments, the resampling processing elements (e.g., circuitry, programmable hardware elements, processors and memories, etc.) may be shared between the two analyses. | 06-20-2013 |
20130154879 | APPARATUSES SYSTEMS AND METHODS FOR INFORMATION INTEGRITY MONITORING - Methods and integrated circuits for performing receiver autonomous integrity monitoring (RAIM) in global navigation satellite system (GNSS) receivers are disclosed. In an embodiment, a first information comprising current position related information is accessed. A second information comprising predicted position related information is accessed based on previously received information. A solution is computed based on the first information and the second information and a presence of outlier information is determined in at least one of the first information and the second information based on the solution. | 06-20-2013 |
20130162467 | SYSTEM AND METHOD FOR BROADCASTING GOLF EVENTS USING SATELLITE IMAGERY - This disclosure provides a golf-stroke recording system, method, and apparatus. For example, the system includes a location sensing component, a processor, and a golf-stroke recording application executable by the processor, which is configured to track the movement of a player's golf ball as the golf ball traverses along the golf course, and then present the tracked movement of the golf ball on images associated with aerial views of the particular golf course on which the player is playing. | 06-27-2013 |
20130162468 | MOBILE TERMINAL AND POSITIONING SATELLITES SELECTING METHOD THEREOF - A mobile terminal capable of selecting optimum satellites among a plurality of positioning satellites and a method of selecting positioning satellites are disclosed with reference to embodiments of the present invention. If DOP (dilution of precision) increases as the number of positioning satellites increases, satellites to be used for positioning are automatically selected from GNSS satellites based on satellite information and a user's menu setting. This can enhance the accuracy of positioning and can reduce battery consumption. In particular, satellites for positioning are spaced from each other by a prescribed distance to reduce DOP, thereby enhancing the accuracy of positioning. Further, multipath signals are reduced in order to enhance the accuracy of positioning. | 06-27-2013 |
20130162469 | GEODETIC SURVEY SYSTEM HAVING A CAMERA INTEGRATED IN A REMOTE CONTROL UNIT - A survey system including a target unit that has a survey stick having a high-precision localizable target and a hand-held remote control unit. The remote control unit has an electronic graphical display and can be mounted on a holder on the survey stick such that the remote control unit is in a fixed position relative to the target fitted to the survey stick. The remote control comprises a camera for taking a camera image in a defined shooting direction. In addition, an image processing and evaluation unit with a data link to the position-finding unit and to the camera is provided which, from knowledge of the fixed relative position and of a defined shooting direction and also on the basis of the determined target position, can spatially relate image data from the camera to the targets in the coordinate system. | 06-27-2013 |
20130169476 | Method and Apparatus for Managing and Configuring Tracker Components for Enhanced Sensitivity Tracking of GNSS Signals - The present invention is related to location positioning systems, and more particularly, to a method and apparatus for making accuracy improvements to a GPS receiver's navigation calculations. According to a first aspect, the invention provides an extreme sensitivity GNSS tracking architecture. According to other aspects, the architecture includes multiple loops per channel, with the loops implemented with hardware and/or software. According to still further aspects, the architecture includes a multi-level lock detection algorithm designed to provide a trade-off between sensitivity and speed that is not possible with existing tracking architectures. | 07-04-2013 |
20130187809 | Satellite Navigation System For Optimal Time To First Fix Using Code And Carrier Diversity - A satellite navigation receiver and method for enhancing time to first fix are provided. The receiver comprises a radio frequency (RF) translator, correlator blocks, and a navigation data processor. The RF translator conditions navigation signals over carrier frequencies. The correlator blocks comprise a predetermined number of correlator channels configured for the carrier frequencies. The predetermined number of correlator channels is divided for parallel collection of sub-frames of navigation data across one or more operation service codes. The sub-frames of navigation data are collected across one or more operation service codes and on one of the carrier frequencies. The sub-frames of navigation data are collected across the carrier frequencies and on one of the operation service codes. The sub-frames of navigation data are collected across the carrier frequencies and across the operation service codes. The navigation data processor processes the parallely collected sub-frames to estimate position of the satellite navigation receiver. | 07-25-2013 |
20130201055 | METHOD AND APPARATUS FOR DETERMINING PHYSICAL CHARACTERISTICS OF A RECEIVING DEVICE IN A NAVIGATION SYSTEM - A method and apparatus are presented for improving accuracy in a navigation system. A method of determining a physical characteristic of a receiving device in a navigation system, includes receiving a plurality of navigation signals from a plurality of navigation signal sources, respectively; determining a plurality of measurement estimates, based on the received navigation signals; and determining a physical characteristic of the receiving device by estimating a first set of one or more parameters in an error model, based on at least the plurality of measurement estimates. The error model includes a first error contribution for modeling noise and a second error contribution for modeling indirect signal propagation of the plurality of navigation signals. | 08-08-2013 |
20130207838 | ANTENNA DEVICE FOR POSITION DETECTION, POSITION DETECTION DEVICE EQUIPPED WITH THIS ANTENNA DEVICE, AND POSITION DETECTION METHOD - Provided is an antenna device for position detection that can determine the current position, using a GPS receiver with a simple structure, with high accuracy comparable to that of an expensive positioning device, and also provided are a position detection device provided with the antenna device and a position detection method. The current position is determined using a GPS that receives signals from satellites orbiting around the earth and determines the current position. Data communication is performed with an antenna main body including: an antenna member provided, at an end thereof, with a receiving section for receiving signals from the orbiting satellites; and a rotation mechanism for rotating the antenna member circularly in the horizontal direction at a substantially uniform speed. The current position is determined based on the signals from the orbiting satellites that have been received by the receiving section. | 08-15-2013 |
20130257647 | Method and Apparatus for Synchronization and Precise Time Computation for GNSS Receivers - According to certain aspects, the invention includes using acquisition channel results from a number of satellites to achieve composite weak acquisition. According to certain other aspects, the invention also includes solving for an improved position estimate and, with a sufficiently accurate, either initial or improved position estimate, also solving for GPS system time using a composite of acquired signals from a plurality of satellites. Within commonly experienced initial position and time uncertainties, the geometric range changes are fairly linear, which allows the point of convergence of ranges to solve for GPS position and subsequently for time with reasonable accuracy, which is the equivalent to obtaining frame sync without any data demodulation or preamble matching. | 10-03-2013 |
20130257648 | PREDICTION REFRESH METHOD FOR EPHEMERIS EXTENSIONS - Systems, methods and devices for using ephemeris data in GNSS receivers and systems are provided. Receivers using synthetic ephemeris data for longer ephemeris availability under poor reception conditions are updated using a variety of techniques that allow for the transfer of accurate information onto degraded synthetic ephemeris information. | 10-03-2013 |
20130285850 | GPS PRE-ACQUISITION FOR GEOTAGGING DIGITAL PHOTOS - A handheld electronic device, such as a GPS-enabled wireless communications device with an embedded camera, a GPS-enabled camera-phone or a GPS-enabled digital camera, determines whether ephemeris data needs to be obtained for geotagging digital photos taken with the device. By monitoring user activity with respect to the camera, such as activation of the camera, the device can begin pre-acquisition of a GPS position fix by obtaining needed ephemeris data before the photograph is actually taken. This GPS pre-acquisition improves the likelihood that a position fix (GPS lock) is achieved by the time the photo is taken (to enable immediate geotagging). Alternatively, the photo can be geotagged retroactively by appending the current location to the metadata tag associated with the digital photo. An optional acquisition status indicator can be displayed on a user interface of the device to indicate that a position fix is being obtained. | 10-31-2013 |
20130293413 | Position and Elevation Acquisition for Orbit Determination - A known ground location (KGL) satellite transceiver can include a position and elevation acquisition module configured to determine a time of flight (TOF) of a pseudonoise (PN) signal and a Doppler shift in a KGL signal for use in determining an orbit of a satellite. The PN signal can include a transmitted PN signal and a transponded PN signal. The KGL signal can include a transmitted KGL signal and a transponded KGL signal. The transmitted PN signal and the transmitted KGL signal can be transmitted sequentially on a first frequency carrier from the KGL satellite transceiver to the satellite. The transponded PN signal and the transponded KGL signal can be retransmitted back sequentially on a second frequency carrier from the satellite to the KGL satellite transceiver. The first frequency carrier and the second frequency carrier use a same frequency carrier or a different frequency carrier from each other. | 11-07-2013 |
20130293414 | Global Positioning System (GPS) and Doppler Augmentation (GDAUG) and Space Location Inertial Navigation Geopositioning System (SPACELINGS) - A global positioning system (GPS) and Doppler augmentation (GDAUG) end receiver (GDER) can include a GDAUG module. The GDAUG module can generate a GDER position using a time of flight (TOF) of a transponded GPS signal and a Doppler shift in a GDAUG satellite (GSAT) signal. The transponded GPS signal sent from a GSAT to the GDER can include a frequency shifted copy of a GPS signal from a GPS satellite to the GSAT. The GSAT signal can include a signal generated by the GSAT to the GDER. | 11-07-2013 |
20130293415 | CORRECTING FOR TIME DELAY VARIATION IN A SATELLITE FOR POSITIONING, NAVIGATION OR TIMING APPLICATIONS - A method for correcting for time delay variations between a plurality of signal paths from a signal source to at least one transmit antenna of a satellite may include measuring a time delay for each of the plurality of signal paths. The method may also include correcting a signal for the time delay variation based on the time delay for the signal path that is currently being used by the satellite, the corrected signal being usable for at least one of navigation, determining a geographic location and determining time. | 11-07-2013 |
20130314276 | METHOD AND APPARATUS FOR DETERMINING POSITION IN A GLOBAL NAVIGATION SATELLITE SYSTEM - A system for determining a position of a device, the system including a receiver module, a communication module, and a location determining module. The receiver module respectively acquires signals from a plurality of satellites totaling in number less than five. The communication module obtains, from a server, via a cellular network or a wireless network, ephemeris data corresponding to one or more of the plurality of satellites. The location determining module determines the position of the device based, at least in part, on (i) the signals acquired from the plurality of satellites, and (ii) the ephemeris data corresponding to the one or more of the plurality of satellites obtained from the server. The position of the device is further determined without a priori knowledge regarding the position of the device. | 11-28-2013 |
20130335264 | RECEIVER OF SATELLITE SIGNALS SERVING FOR LOCATION - A receiver of satellite signals serving for location (GNSS) adapted to be fixed on a support comprising at least one antenna able to receive the said satellite signals serving for location, the antenna comprising at least two mobile phase centres, determination means for determining a location on the basis of the said satellite signals received, comprises displacement means adapted for displacing the said phase centres, for selecting one of the phase centres and for determining a position of the said selected phase centre with respect to the support. | 12-19-2013 |
20130335265 | PROCESSING OF SIGNALS TO PROVIDE A DELAY DOPPLER MAP - An apparatus is disclosed for processing a sequence of samples of a received signal R reflected by a target surface and having a delay and a frequency shift relative to a reference signal D to obtain a delay Doppler map for the reflected signal. A first correlation module can obtain partial correlations z(n′, k) between samples corresponding to the reflected signal R and a samples corresponding to the reference signal D, across a set of delays. An inverse discrete fourier transform (DFT) of a sequence of samples can be derived from at least DFTs of a first reflected signal sequence and second reference signal sequence. | 12-19-2013 |
20130335266 | GNSS Signal Processing with Delta Phase for Incorrect Starting Position - Methods and apparatus for processing of GNSS signals are presented. These include GNSS processing with predicted precise clocks, GNSS processing with mixed-quality data, GNSS processing with time-sequence maintenance, GNSS processing with reduction of position jumps in low-latency solutions, GNSS processing with position blending to bridge reference station changes, and GNSS processing with delta-phase correction for incorrect starting position. | 12-19-2013 |
20130342393 | Selection of a Subset of Global Navigation Satellite System Measurements Based on Relation between Shifts in Target Parameters and Sum of Residuals - An optimum measurement subset with a specified number of elements is generated from a set of input global navigation satellite system (GNSS) measurements. A design matrix and a weight matrix are generated. Values of a set of coefficients corresponding to the set of input GNSS measurements are calculated. The value of a specific coefficient is calculated as the ratio of the change in value of the at least one target parameter resulting from the change in value of the specific input GNSS measurement to the change in value of the sum of squared residuals resulting from the change in value of the specific input GNSS measurement. The optimum measurement subset is selected based at least in part on the values of the set of coefficients. | 12-26-2013 |
20140055299 | APPARATUS AND METHOD FOR DETERMINING ORBIT OF GEOSTATIONARY SATELLITE - An apparatus and method for determining an orbit of a geostationary satellite is provided. The orbit of the geostationary satellite may be determined using at least one pseudo-range of the geostationary satellite calculated based on an orbit and a position of at least one global positioning system (GPS) satellite, position information of the geostationary satellite, and an angle between the geostationary satellite and each GPS satellite. | 02-27-2014 |
20140062766 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. Data synchronization is established between a receiver and a navigation device based on matching of a header of navigation data. The receiver receives the navigation data from the navigation device. If, subsequently, the data synchronization is interrupted, information related to the data synchronization from the receiver is retrieved. The data synchronization is then re-established between the receiver and the navigation device based on the retrieved information. | 03-06-2014 |
20140062767 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. A distance between a navigation device and a receiver is estimated. The receiver receives navigation data from the navigation device. A sending time of the navigation data sent from the navigation device is then determined based on the estimated distance between the navigation device and receiver. Synchronization information is computed based on the sending time of the navigation data. The synchronization information is used for synchronizing the navigation data. | 03-06-2014 |
20140062768 | Method and Apparatus for Synchronizing Navigation Data - Method, apparatus, and programs for synchronizing navigation data. A first distance between a first navigation device and a receiver and a second distance between a second navigation device and the receiver are estimated. The receiver receives first and second navigation data from the first and second navigation devices, respectively. Based on a first sending time of the first navigation data sent from the first navigation device and the first and second distances, a second sending time of the second navigation data sent from the second navigation device is then determined. Synchronization information of the second navigation device is computed based on the second sending time of the second navigation data. The synchronization information is used for synchronizing the second navigation data received at the receiver. | 03-06-2014 |
20140062769 | System and Method for Locating a Satellite Signal Receiver - System and method for locating a satellite signal receiver are disclosed. The system includes a channel opening module, a signal processing module, and a positioning module. The channel opening module is configured for opening a predetermined number of channels based on a priority schedule. The signal processing module is configured for capturing and tracking satellite signals via the opened channels, and demodulating the tracked satellite signals to obtain corresponding satellite data. The positioning module is configured for determining a position of the satellite signal receiver based on the satellite data. | 03-06-2014 |
20140062770 | Satellite Signal Receiver and Method for Updating Ephemeris Information Thereby - A satellite signal receiver and a method for updating ephemeris information thereby are disclosed. The receiver includes an instruction module, a signal processing module, and an update module. The instruction module is configured to send an instruction for updating ephemeris information at a set time interval. The signal processing module is configured to obtain corresponding satellite data. The update module is configured to update the ephemeris information according to the obtained satellite data in response to the instruction for updating ephemeris information. | 03-06-2014 |
20140085136 | SYSTEMS AND METHODS FOR TIME SYNCHRONIZATION - A method and system for time synchronization in a mobile device are disclosed. The method includes negotiating a synchronization schedule. The synchronization schedule defines a plurality of synchronization times for receiving synchronization messages. The method further includes transitioning the mobile device from a first state to a second state to receive a synchronization message. The mobile device uses less power in the first state than the second state and the mobile device cannot receive the synchronization message when in the first state. The method further includes synchronizing a clock component in response to receiving the synchronization message. | 03-27-2014 |
20140085137 | DEVICE AND METHOD FOR PROVIDING LOCATION INFORMATION BY SMART NAVIGATION - A device and method for providing location information by smart navigation are provided. The device for providing location information may include a generation unit to generate visual synchronization information in response to a location information request from a terminal, a transmission unit to transmit the visual synchronization information and to control the visual synchronization information to be transferred to the terminal, and a computation unit to extract location information of a transmitting station from the visual synchronization information received from the terminal and to compute a location of the terminal. | 03-27-2014 |
20140085138 | EFFICIENT DETECTION OF MOVEMENT USING SATELLITE POSITIONING SYSTEMS - The management of GPS sensor data in a mobile communication device. In one embodiment, a mobile device can implement a GPS sensor data sampling framework to minimize the number of GPS satellite fixes required to determine location or movement assessments. Additionally, in another embodiment, the mobile device can implement a heuristic-based processing routine to determine whether sampled GPS data is indicative of GPS signal reflections. | 03-27-2014 |
20140097982 | TRANSMITTING POSITIONS OF DEVICES - Transmitting positions of devices is described herein. One method for transmitting a position of a device includes converting a received Global Positioning System (GPS) signal to a short range signal with a first device, transmitting the short range signal using the first device, receiving the short range signal with a second device, and transmitting a position of the second device determined from the short range signal using the second device. | 04-10-2014 |
20140159951 | Shoe-Embedded Emergency Positioning System - A shoe body light-emitting device includes: a waterproof enclosure embedded on a shoe body and having a cavity; a control circuit embedded in the cavity and comprising circuit board and a motion actuated switch. The positive electrode of the circuit board is electrically coupled to the positive electrodes of light-emitting bodies and a power supply. The motion actuated switch is electrically connected with the circuit board for triggering the control circuit in response to motion of the shoe body, so that light-emitting bodies light in a predetermined way. A micro-current battery on the circuit board is used for supplying the light-emitting device with power. The light-emitting bodies may first flash N times simultaneously, then respectively flash twice sequentially, then respectively flash twice reversely, then respectively flash twice sequentially, and finally flash N times simultaneously (N is a natural number larger than or equal to 1). | 06-12-2014 |
20140232592 | VEHICLE NAVIGATION USING NON-GPS LEO SIGNALS AND ON-BOARD SENSORS - A navigation system includes a navigation radio and a sensor onboard a vehicle. The navigation radio receives and processes low earth orbit RF signals to derive range observables for a corresponding LEO satellite. A sensor is operable to generate at least one of vehicle speed data, acceleration data, angular rate data and rotational angle data under high vehicle dynamics. The navigation radio includes a navigation code operable to obtain a position, velocity and time solution (a “navigation solution”) based on the one or more range observables, ephemerides for the corresponding LEO satellite, a heading pseudomeasurement, a navigation radio altitude pseudomeasurement; one or more vehicle velocity pseudomeasurements orthogonal to the altitude pseudomeasurements; and the generated at least one of vehicle speed data, acceleration data, angular rate data and rotational angle data. The navigation radio uses the navigation solution to acquire a GPS signal during interference with a coarse acquisition GPS signal. | 08-21-2014 |
20140266874 | CROSS-CORRELATION MITIGATION ALGORITHMS FOR GNSS SYSTEMS USING COMMON OVERLAY CODES - Methods and systems for evaluating Global Navigation Satellite System (GNSS) signals are provided. Each of a first GNSS signal received by a GNSS receiver and a second GNSS signal received by the GNSS receiver is accessed. The second GNSS signal can have temporal fluctuations weaker than temporal fluctuations in the first GNSS signal. A delay between a sequence in the first GNSS signal and a corresponding sequence signal in the second GNSS signal is estimated and compared to a threshold. Upon determining that the delay exceeds the threshold, a location is estimated using both the first GNSS signal and the second GNSS signal. | 09-18-2014 |
20140368379 | RECEIVER FOR SIMULTANEOUS RECEPTION OF SIGNALS FROM MULTIPLE GNSS SATELLITE SYSTEMS - A method, receiver, and mobile terminal for simultaneously receiving and processing signals of multiple satellites from a plurality of navigational satellite system constellations are described. In the method, satellite signals from a plurality of navigational satellite systems are translated into an intermediate frequency and converted from analog to digital together, but then are separated out according to each navigational satellite system in the digital domain. | 12-18-2014 |
20150009065 | Cross Correlation Detection In A Satellite Navigation Receiver - A method and a system for detecting cross correlation in a satellite navigation receiver (SNR) in real time are provided. The SNR parallelly receives navigation signals from multiple satellites via multiple input channels. The SNR extracts ephemeris data from sub-frames of navigation data of each of the navigation signals. The SNR compares the ephemeris data of each navigation signal with the ephemeris data of another navigation signal. The SNR detects cross correlation between the navigation signals when the ephemeris data comparison results in a match and discards the navigation signal with low signal strength. The SNR also retrieves a ranging code from the sub-frames of navigation data of each navigation signal. The SNR compares the ranging code with a pre-programmed satellite identity code of a corresponding satellite. The SNR detects cross correlation when the code comparison results in a mismatch and discards the navigation signal with the mismatched ranging code. | 01-08-2015 |
20150035698 | AMELIORATION OF FREQUENCY ERRORS AND/OR THEIR EFFECTS - A satellite positioning subsystem includes a frequency converter that applies a downshift in frequency to a received signal that should contain a satellite signal that has been spread and modulated on a carrier signal. A non-crystal oscillator produces an output signal whose frequency acts as a controlling reference for the frequency converter. A crystal oscillator is coupled to a controller that develops a control signal for controlling the frequency of the output signal of the non-crystal oscillator. A processor intermittently corrects the crystal oscillator such that its output frequency experiences jumps. A filter filters the control signal to limit the rate of change of frequency that the control signal demands of the output signal of the non-crystal oscillator such that a phase rotation of π cannot occur in the output signal of the non-crystal oscillator in the time that would be taken to despread a sample of the satellite signal. | 02-05-2015 |
20150138014 | PORTABLE BIOMETRIC MONITORING DEVICES HAVING LOCATION SENSORS - Assisted-GPS for a portable biometric monitoring device is provided. The portable biometric monitoring device may obtain updated ephemeris data from an associated secondary device via a short-range, low-power communication protocol. The secondary device may be a computing device such as a smartphone, tablet, or laptop. Various rules may control when the ephemeris data is updated. The ephemeris data may be used in the calculation of the global position of the portable biometric monitoring device. Additionally, the portable biometric monitoring device may communicate downloaded position fixing data to the associated secondary device. The associated secondary device may then calculate the global position from the position fixing data. | 05-21-2015 |
20150309157 | SYSTEMS AND APPLICATIONS OF LIGHTER-THAN-AIR (LTA) PLATFORMS - Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The new systems and methods relate to rise rate control, geo-location from a LTA platform including landed payload and ground-based vehicle locations, and steerable recovery systems. | 10-29-2015 |
20150309177 | GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER SYSTEM WITH RADIO FREQUENCY HARDWARE COMPONENT - A stand-alone radio frequency hardware component includes a first antenna configured for receiving, over-the-air, a first analog Global Navigation Satellite System (GNSS) signal in a first frequency band. A second antenna configured for receiving, over-the-air, at least a second analog GNSS signal in a second frequency band, wherein the first frequency band and the second frequency band are separate and distinct. A digitizer configured for digitizing the first analog GNSS signal into a first digitalized GNSS signal and for digitizing the second analog GNSS signal into a second digitized GNSS signal. A memory for storing the digitized GNSS signals, wherein the digitized GNSS signals are accessed from the memory by a separate communication device. | 10-29-2015 |
20150309183 | METHOD OF ESTIMATING THE POSITION OF A DEVICE - The invention relates to a method of estimating the position of a device, the method comprising: obtaining a satellite positioning based estimate of the position of the device, the satellite positioning based estimate being determined from satellite positioning signals received from one or more satellites of a satellite positioning system; obtaining orbital positioning data indicative of an orbital position of each of the said one or more satellites; and determining an indicator of the accuracy of the satellite positioning based estimate taking into account the said orbital positioning data. The method is particularly applicable to estimating the position of a personal electronic device. | 10-29-2015 |
20150316655 | Global Positioning System (GPS) and Doppler Augmentation (GDAUG) and Space Location Inertial Navigation Geopositioning System (SPACELINGS) - A global positioning system (GPS) and Doppler augmentation (GDAUG) end receiver (GDER) can include a GDAUG module. The GDAUG module can generate a GDER position using a time of flight (TOF) of a transponded GPS signal and a Doppler shift in a GDAUG satellite (GSAT) signal. The transponded GPS signal sent from a GSAT to the GDER can include a frequency shifted copy of a GPS signal from a GPS satellite to the GSAT. The GSAT signal can include a signal generated by the GSAT to the GDER. | 11-05-2015 |
20150316656 | METHOD FOR DETERMINING THE POSITION OF A SATELLITE NAVIGATION SYSTEM RECEIVER, AND ASSOCIATED SYSTEM - A method is provided for determining the position of a satellite navigation system receiver in which use is made of a probabilistic weighting of the signals received, the weighting using a coefficient K | 11-05-2015 |
20150323677 | POSITION CALCULATION METHOD AND POSITION CALCULATION APPARATUS - A position calculation method includes receiving positioning support information containing at least information of a position and a velocity of a positioning satellite from an artificial satellite that transmits the positioning support information, calculating orbital information of the positioning satellite using the positioning support information, and calculating a position of a receiver using a signal from the positioning satellite and the orbital information. | 11-12-2015 |
20160003933 | LOCATION OF A DISTRESS BEACON - There is disclosed a computer implemented method for processing the signal emitted by a distress beacon, the signal being received by several satellites and forwarded to at least one ground station, the method comprising the steps consisting in determining a set of hypothetical positions of the beacon, and for at least one of the hypothetical positions, for each satellite, offsetting the signal received and forwarded as a function of the hypothetical position; summing the offset signals; and evaluating the validity of the sum of the offset signals as a function of the presence of a predefined characteristic in the sum. Developments describe aspects such as the temporal and/or frequency offsetting, the construction of a digital replica of the signal transmitted by the beacon, and as the minimizing of the weighted residues of the offsets. System aspects are described, including the calibration of an active antenna or an array of antennas. | 01-07-2016 |
20160033648 | MULTI-ANTENNA-GNSS RECEIVER-SYSTEM TO RAISE THE PROBABILITY OF LINE OF SIGHT - A system having two or more antenna-receiver combinations is provided, wherein each of the two or more antenna-receiver combinations has an antenna and a receiver. Furthermore, the system has a position determiner for determining a position of the system. Each antenna-receiver combination is configured to receive time information from each satellite of three or more satellites, if the antenna of said antenna-receiver combination has a line of sight to said satellite. The position determiner is configured to determine said position of the system depending on a satellite position of each of the three or more satellites, and depending on the time information from each of the three or more satellites provided by one or more of the two or more antenna-receiver combinations, if, for each of the three or more satellites, the position determiner receives time information of said satellite from at least one of the two or more antenna-receiver combinations. | 02-04-2016 |
20160116600 | METHOD AND SYSTEM FOR 3D POSITION ESTIMATION OF A GNSS RECEIVER USING TRAVEL TIME MEASUREMENTS - A system and associated methodology determines the 3D position of a Global Navigation Satellite System (GNSS) receiver using travel times of a signal. In addition, the system determines a clock offset between the GNSS receiver and satellites. The system finds the required coordinate component while minimizing the computational requirement. | 04-28-2016 |
20160124070 | METHODS AND APPARATUS FOR DETECTING GNSS SATELLITE SIGNALS IN SIGNAL DEGRADED ENVIRONMENTS - A location determining device and method of detecting GNSS signals, the method includes: determining candidate GNSS satellites orbiting above the location determining device using an estimated location area, time and predicted orbit data of all GNSS satellites and for the candidate GNSS satellites, determining nominal Dopplers by projecting velocities of the candidate GNSS satellites onto the estimated location area; determining correlation search spaces around the respective nominal Dopplers over estimated code phases; determining correlators for the correlation search spaces and performing correlation; determining receiver clock bias when correlation peaks associated with a majority of GNSS satellites are located at a common Doppler offset; detecting GNSS signals within the common Doppler offset using a set of detectors, one of the set of detectors detecting a correlation peak having a highest probability of detection; and determining a reduced search space in which GNSS signals may be detected. | 05-05-2016 |
20160377731 | DETECTION OF PARKING LOT CONTEXT - The system provides a global navigation satellite system (GNSS) receiver in a vehicle including a radio frequency (RF) receiving circuit for receiving GNSS signals from a plurality of GNSS satellites orbiting Earth at different elevations, and a processor. The processor is configured to calculate a first signal to noise ratio (SNR) for a first GNSS satellite, calculate a second SNR for a second GNSS satellite, monitor a relative change in the first SNR with respect to the second SNR over time, determine that the GNSS receiver has entered a parking garage based on the relative change in the first SNR with respect to the second SNR, in response to this determination, restrict a positioning algorithm to estimate the position of the vehicle upon the vehicle exiting the parking garage to be within a specified range of a known position of an entrance of the parking garage. | 12-29-2016 |
20190146096 | METHOD AND APPARATUS FOR WIRELESS COMMUNICATION IN WIRELESS COMMUNICATION SYSTEM | 05-16-2019 |