| Entries |
| Document | Title | Date |
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| 20100245172 | Method of Synchronising Nodes of a Network, and System and Device Therefor - A method of and a system for synchronising a plurality of spaced apart nodes of a network to a reference time of a control centre, the method comprising receiving measurement data from each of the plurality of nodes; ranking the plurality of nodes with respect to one another according to the measurement data; selecting one or more master nodes from the plurality of nodes according to the ranking; assigning each of the plurality of nodes to a corresponding master node; determining a first time offset between the local time measured at each node and the local time measured at its corresponding master node and determining a second time offset between each of the master nodes and the reference time such that the time offset between the local time measured at each node and the reference time can be determined. | 09-30-2010 |
| 20110279313 | APPARATUS AND METHOD FOR PROCESSING NAVIGATION SIGNAL - An apparatus and method for processing a navigation signal are provided. When a navigation signal is received and processed, a search range associated with signal processing may be reduced by directly computing a clock offset of a receiving terminal, and accordingly it is possible to reduce an operation amount associated with the signal processing, and an amount of a power consumed by the receiving terminal. Additionally, due to a reduction in the search range, it is also possible to reduce a time required to acquire a signal. | 11-17-2011 |
| 20120256791 | MOBILE WIRELESS COMMUNICATIONS DEVICE COMPRISING A SATELLITE POSITIONING SYSTEM ANTENNA AND ELECTRICALLY CONDUCTIVE DIRECTOR ELEMENT THEREFOR - A mobile wireless communications device may include a portable housing, at least one wireless transceiver carried by the portable housing, and a satellite positioning signal receiver carried by the portable housing. An antenna may also be carried by the portable housing and connected to the satellite positioning signal receiver. Further, at least one electrically conductive director element may be carried by the portable housing in spaced apart relation from the antenna and inductively coupled thereto for directing a beam pattern thereof. | 10-11-2012 |
| 20140085141 | PLUGGABLE PACKET MASTER CLOCK - Apparatus for providing timing information, the apparatus comprising: a primary reference time clock (PRTC) that provides a reference time of day (ToD) and a reference frequency; a packet master clock that receives the ToD and reference frequency and is configured to distribute timing to a slave clock in accordance with a timing over packet procedure responsive to the ToD and the reference frequency; and a housing that houses the PRTC and packet master clock which may be plugged into a conventional small form factor (SFP) compliant cage to connect the packet master clock to a packet switched network (PSN). | 03-27-2014 |
| 20140097983 | 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. | 04-10-2014 |
| 20140111376 | DUAL ANTENNA SYSTEMS WITH VARIABLE POLARIZATION - Antenna systems for receiving transmitted signals comprising at least a first tuned antenna disposed in a known relationship spatially with a second antenna, with the first tuned antenna electrically connected to the second antenna, are disclosed. The antenna system may be configured to allow the antennas to reliably discriminate between left-hand and right-hand polarized circular signals. | 04-24-2014 |
| 20140125518 | RF/DIGITAL SIGNAL-SEPARATING GNSS RECEIVER AND MANUFACTURING METHOD - An RF/digital signal-separating receiver is provided for GNSS and other RF signals. The receiver includes a first master antenna and a second slave antenna, which are positioned in spaced relation for directional, radio compass applications. First and second downconverters and first and second ADCs are located under the first and second antennas in analog signal areas, which configuration minimizes cross-coupling RF signals from the antennas and reduces noise. The first and second ADSs are connected to respective first and second correlators in a digital signal location, which is centrally located relative to the antennas. The correlators are connected to a microprocessor for computing distances for the received signals, from which the receiver's orientation or attitude is determined. A method of manufacturing receivers with this configuration is also disclosed. | 05-08-2014 |
| 20140125519 | Methods for Encoding and Recovering GNSS Ephemeris For Over-The-Air Transmission - A method and apparatus for processing and transmitting precise orbit predictions of satellites in a Global Navigation Satellite System such as Navstar-GPS which employs curve fitting techniques and a polynomial and sinusoidal model to encode ephemerides, and particularly ephemerides of durations 6 hours or longer, in order to minimize bandwidth requirements over-the-air and NVRAM storage requirements. The methods also apply to GNSS constellations such as Galileo or GLONASS. Also, methods are disclosed for recovering the ephemeris on a GNSS receiver device in the constellation's native format. | 05-08-2014 |
| 20140132445 | POSITIONING QUALITY OF GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVERS - A navigation receiver operating in a differential navigation mode can change from one solution type to another. At each epoch, primary estimates of coordinates and the solution type are received. Each solution type has a corresponding accuracy. To improve the positioning quality when the solution type changes, smoothed estimates of coordinates are generated according to a two-branch algorithm. Two conditions are evaluated. If both conditions are satisfied, the current-epoch smoothed estimates of coordinates are set equal to the current-epoch extended estimates of coordinates calculated from the sum of the previous smoothed estimates of coordinates and coordinate increments calculated from carrier phases. If at least one of the conditions is not satisfied, updated smoothed estimates of coordinates are generated based on the sum of the current-epoch extended estimates of coordinates and a correction signal. | 05-15-2014 |
| 20140132446 | METHOD AND APPARATUS FOR DETECTING CROSS CORRELATION BASED IN LIMITED RANGE CODE PHASE OFFSET OBSERVATIONS - Apparatus and a method identify and eliminate false satellite signals that are cross correlation signals without prior knowledge of any possibly interfering strong satellite signals. The disclosed method analyzes a small number of code phase offsets relative to a threshold value based on the detected peak of a weak satellite signal to determine if the weak satellite signal is not a true satellite autocorrelation signal but a cross-correlation signal. The number of code phase offsets and the threshold value may be determined based on the signal-to-noise ratio of the detected weak satellite signal. | 05-15-2014 |
| 20140139371 | THE POSITIONING QUALITY OF GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVERS - A navigation receiver operating in a differential navigation mode transmits primary estimates of coordinates with an accuracy estimate that can vary during operation. To improve the positioning quality when the accuracy estimate changes, smoothed estimates of coordinates are generated according to a two-branch algorithm. The current-epoch accuracy estimate is compared to a current-epoch value of threshold accuracy. Upon determining that the current-epoch accuracy estimate is greater than or equal to the current-epoch value of threshold accuracy, the current-epoch smoothed estimates of coordinates are set equal to the current-epoch extended estimates of coordinates calculated from the sum of the previous smoothed estimates of coordinates and coordinate increments calculated from carrier phases. Upon determining that the current-epoch accuracy estimate is less than the current-epoch value of threshold accuracy, the current-epoch smoothed estimates of coordinates are generated based on the sum of the current-epoch extended estimates of coordinates and a correction signal. | 05-22-2014 |
| 20140152497 | METHOD AND SYSTEM FOR DETERMINING AN ERROR IN THE ESTIMATION OF THE TIME TAKEN TO CROSS THE IONOSPHERE - A method for determining an error in the estimation of time taken to cross the ionosphere by a signal along a vertical sight axis associated with a receiver, the vertical sight axis cutting the ionosphere at a point of interest, the vertical sight axis being an axis passing through the receiver and a satellite of interest, comprises: determining at least two points of cutting of the ionosphere by two sight axes between a satellite and at least two ground stations; determining at least one angle formed by segments going from the point of interest to two of the cutting points; and determining the spatial dispersion of the cutting points with respect to the point of interest on the basis of the angle, by finding the difference with a predetermined angle and taking the average of the difference or differences. | 06-05-2014 |
| 20140203963 | TIMING SIGNAL GENERATING DEVICE, ELECTRONIC APPARATUS, MOVING OBJECT, METHOD OF GENERATING TIMING SIGNALS, AND METHOD OF CONTROLLING SATELLITE SIGNAL RECEIVER - A timing signal generating device includes a GPS receiver and a processing unit. The GPS receiver functions as a positioning calculation unit, and receives satellite signals transmitted from GPS satellites and performs positioning calculation based on trajectory information and time information contained in the received satellite signals. Further, the processing unit functions as a position information generation unit, and generates position information of a receiving point based on a mode value or a median value in results of the positioning calculation at a plurality of times by the GPS receiver. | 07-24-2014 |
| 20140218234 | POSITIONING DEVICE WITH COMMUNICATION MODULE AND ANTENNA - Embodiments provide for a positioning device comprising a global navigation satellite system (GNSS) receiving unit, a communication antenna and a communication module. The GNSS receiving unit is adapted to receive satellite information. The communication antenna allows for reception and/or transmission of complementary data. The communication module is connectable to the GNSS receiving unit and the communication antenna. The communication module is configured to provide complementary data received at the communication antenna to the GNSS receiving unit and/or to provide complementary data generated at the GNSS receiving unit to the communication antenna. The communication module is detachable or switchable for adaptation to an available communication technology. | 08-07-2014 |
| 20140232594 | Wireless Local Messaging System and Method of Determining a Position of a Navigation Receiver Within a Wireless Local Messaging System - A wireless local messaging system includes a transmitter transmitting a local message to a navigation receiver configured to receive and process navigation messages from satellites of a global navigation satellite system on a given carrier frequency, each of the satellites transmitting the navigation messages with a satellite-individual PRN code. The transmitter transmits the local message in a local message signal on the given carrier frequency with a local PRN code that is not used by a satellite of the global navigation satellite system, and the receiver receives the local PRN code and processes the local message signal. | 08-21-2014 |
| 20140240171 | METHOD FOR DETECTING ANOMALY SATELLITE IN MULTI-REFERENCE STATIONS ENVIRONMENT AND APPARATUS USING DETECTING METHOD - The present invention relates to a method of determining an anomalous satellite in a multi-reference station environment and a determination apparatus using the method, which detect an anomaly in a satellite and determine the cause of the anomaly in a multi-reference station environment, and continuously provide services in an environment in which the cause of the anomaly is removed, thus improving availability and continuity, and enhancing an integrity monitoring function. A method of determining an anomalous satellite in a multi-reference station environment according to the present invention includes a first step of individually receiving satellite signals including code measurements and carrier measurements from one or more reference stations respectively communicating with a plurality of satellites, a second step of checking whether the number of reference stations communicating with the plurality of satellites is at least 3, based on the satellite signals, a third step of detecting presence or non-presence of an anomaly state of the satellites, based on the code measurements and the carrier measurements of the satellite signals if it is checked at the second step that the number of reference stations is at least 3, a fourth step of identifying an anomalous satellite from the anomaly state of the satellites detected at the third step, and a fifth step of determining a cause of an anomaly in the anomalous satellite identified at the fourth step. | 08-28-2014 |
| 20140240172 | Detection and Correction of Anomalous Measurements and Ambiguity Resolution in a Global Navigation Satellite System Receiver - A global navigation system includes a first navigation receiver located in a rover and a second navigation receiver located in a base station. Single differences of measurements of satellite signals received at the two receivers are calculated and compared to single differences derived from an observation model. Anomalous measurements are detected and removed prior to performing computations for determining the output position of the rover and resolving integer ambiguities. Detection criteria are based on the residuals between the calculated and the derived single differences. For resolving integer ambiguities, computations based on Cholesky information Kalman filters and Householder transformations are advantageously applied. Changes in the state of the satellite constellation from one epoch to another are included in the computations. | 08-28-2014 |
| 20140253375 | LOCALLY MEASURED MOVEMENT SMOOTHING OF POSITION FIXES BASED ON EXTRACTED PSEUDORANGES - A Global Navigation Satellite System (GNSS) chipset embedded within the cellular device is accessed. The GNSS chipset calculates raw pseudoranges. The raw pseudoranges are extracted from the GNSS chipset for processing elsewhere in the cellular device outside of the GNSS chipset. A position fix is determined based on the raw pseudoranges. Locally measured cellular device movement information is obtained from at least one sensor that is in a known physical relationship with the cellular device. The locally measured cellular device movement information is applied to the position fix. | 09-11-2014 |
| 20140266879 | GPS RECEIVING APPARATUS AND COMPUTER READABLE-STORAGE MEDIUM - A GPS receiving apparatus and a computer readable storage medium are described. According to one implementation, the GPS receiving apparatus includes a GPS receiving unit, a storage unit, a position measuring unit, a reception control unit, and a movement judging unit. The storage unit stores GPS information. The reception control unit starts reception operation with a first or second mode. In the first mode, the GPS receiving unit uses the stored GPS information. In the second mode, the stored GPS information is not used. The movement judging unit judges whether the apparatus is moved a predetermined distance or more from a previous measured position. When the movement judging unit judges that the apparatus is moved the predetermined distance or more, the reception control unit starts reception operation with the second mode. | 09-18-2014 |
| 20140292571 | POSITIONING SYSTEM WITH FRAUD DETECTION MECHANISM FOR A CRITICAL APPLICATION - A positioning system comprises an onboard GNSS satellite receiver in a mobile element belonging to a user which estimates the position of said mobile element at various instants, a first processing module determining a consistency indicator by combining the estimated positions and data provided by secondary information sources, using a dynamic model of movement of the mobile elements to be positioned. The indicator is determined by comparing a speed, acceleration, gyration triplet derived from direction and velocity measurements taken by the mobile element, to a dynamic model of movement of an object, vehicle, person or animal to be positioned. The system comprises a consolidation module containing means storing the positions estimated at various instants, a digital filter to obtain a filtered position from the stored positions of a user, the consistency indicator calculated from filtered positions; and detection means determining from the consistency indicator whether the estimated positions are falsified. | 10-02-2014 |
| 20140292572 | UTILIZING SBAS SIGNALS TO IMPROVE GNSS RECEIVER PERFORMANCE - The present invention provides methods of improving GNSS receivers' satellite signal acquisition and TTFF performances by taking advantage of SBAS signals. Due to a SBAS satellite's geostationary position and typically strong signal, the SBAS satellite signal can be acquired more quickly than a GPS satellite signal. Once a SBAS satellite signal is acquired the Doppler frequency search uncertainty may be reduced for remaining GNSS satellites which are to be acquired. Furthermore, a satellite search list may be optimized to search for satellites close to the line of sight (LOS) of the SBAS satellite for which a signal has been acquired, in receiver “warm” and “hot” start modes. | 10-02-2014 |
| 20140292573 | METHODS FOR GENERATING ACCURACY INFORMATION ON AN IONOSPHERE MODEL FOR SATELLITE NAVIGATION APPLICATIONS - Accuracy information for an ionosphere model is generated. Phase residual information of a parameter estimation procedure is obtained and coordinates of pierce points are computed on a sphere around the earth. The coordinates indicate where signals pierce the sphere. Phase residual information is mapped for each pierce point. A grid of equidistant points is put on the sphere and the pierce points are identified. For each selected grid point, vertical accuracy information is computed based on vertical residual information, and a scale factor is computed based on the vertical accuracy information. The accuracy information for the ionosphere model is generated based on the vertical accuracy information computed for the selected grid points and an overall scale factor computed based on computed scale factors. | 10-02-2014 |
| 20140300513 | MOBILE TERMINAL AND METHOD - One aspect of the present invention relates to a mobile terminal having a positioning function, comprising: a GPS positioning unit configured to perform GPS based positioning to obtain a positioning result including a position of the mobile terminal and a measurement status regarding the GPS based positioning; a base station based positioning unit configured to perform base station based positioning to obtain a positioning result including a position of the mobile terminal and a measurement status regarding the base station based positioning; a historical positional information storage unit configured to store historical positional information including the positioning results obtained by the GPS based positioning unit and the base station based positioning unit; and a positioning determination unit configured to determine whether a valid positioning result regarding a camped base station of the mobile terminal is in the historical positional information, wherein when positioning is performed for the mobile terminal in response to activation of the positioning function, prior to activation of the GPS based positioning and the base station based positioning, the positioning determination unit identifies the camped base station of the mobile terminal, identifies positioning results regarding the identified base station in the historical positional information, detects a valid positioning result from the identified positioning results based on the measurement status of the identified positioning results and provides the detected positioning result as the positioning result for the mobile terminal. | 10-09-2014 |
| 20140306842 | ACCURACY AND PERFORMANCE OF THE HYBRID POSITIONING SYSTEM - The present disclosure relates to a method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device. The method can include determining an initial WPS position of the device using WPS, calculating an error region around the initial WPS position of the device, dividing the error region into a plurality of points, obtaining satellite measurements from at least two satellites in view of the device, determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites, selecting the point with the lowest variation in the receiver clock bias, and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device. | 10-16-2014 |
| 20140313076 | INDOOR TRILATERALIZATION USING DIGITAL OFF-AIR ACCESS UNITS - A system for indoor localization using satellite navigation signals in a Distributed Antenna System. The system includes a plurality of Off-Air Access Units (OAAUs), each operable to receive an individual satellite navigation signal from at least one of a plurality of satellite navigation systems (e.g., GPS, GLONASS, Galileo, QZSS, or BeiDou) and operable to route signals optically to one or more DAUs. The system further includes a plurality of remote DRUs located at a Remote location that are operable to receive signals from a plurality of local DAUs. Moreover, the system includes an algorithm to delay each individual satellite navigation signal for providing indoor localization at each of the plurality of DRUs. | 10-23-2014 |
| 20140320341 | POSITION CALCULATING METHOD AND POSITION CALCULATING DEVICE - A position calculating method includes receiving positioning information including at least earth orientation information from a positioning satellite that transmits the positioning information, calculating orbit information of the positioning satellite using the positioning information, and calculating a position of a receiver using a signal from the positioning satellite and the orbit information. | 10-30-2014 |
| 20140340256 | METHOD AND TRACKING DEVICE FOR TRACKING MOVEMENT IN A MARINE ENVIRONMENT WITH TACTICAL ADJUSTMENTS TO AN EMERGENCY RESPONSE - The present invention relates to devices and methods for tracking movement in a marine environment. At least one tracking device that is adapted to be deployed on a surface of the water, wherein the tracking device is capable of moving along the same trajectory of a desired object. Data from the tracking devices are received by at least one satellite, transmitted to a database, and used to determine the forecasted trajectory of the desired object. All data collected from deployed tracking devices may be integrated into a spatial data repository for analysis and reporting using GIS and associated information technologies, thereby allowing for more accurate decision-making and asset deployment during a fluid spill or similar marine contamination event. The present invention also allows for the collection and modeling of accurate localized sea current data, which may assist with marine and coastal engineering works such as shoreline protection and port dredging. | 11-20-2014 |
| 20140347216 | EPHEMERIS COLLECTION DEVICE AND METHOD - The present disclosure discloses an ephemeris collection device and a method of collecting ephemeris data. The ephemeris collection device may include a data storage unit, configured to store a first part of a first ephemeris subframe if a synchronization of the first ephemeris subframe is not completed; and a subframe merge unit, coupled with the data storage unit and configured to receive a second part of the first ephemeris subframe from the subframe synchronizer and retrieve the first part of the first ephemeris subframe from the data storage unit during a subsequent transmission of the first ephemeris subframe. A complete first ephemeris subframe is obtained based on the first part and the second part of the first ephemeris subframe. | 11-27-2014 |
| 20140347217 | PORTABLE BASE STATION NETWORK FOR LOCAL DIFFERENTIAL GNSS CORRECTIONS - A DGNSS-based guidance system, wherein a rover receiver first utilizes data from a master base station transceiver, a DGNSS reference network, or some other differential source to compute a differentially corrected location to establish a reference DGNSS relationship. Using this location and data observed only at the rover, the rover computes an internal set of differential corrections, which set is stored in computer memory, updated as necessary, and applied in future times to correct observations taken by the rover. As the rover enters into areas of other base station receiver reference networks, the rover transceiver will send positional information it receives from the master base station to the new, secondary base station. The secondary base station then calibrates its own reference information using information sent from the original master base station. | 11-27-2014 |
| 20140354472 | METHOD AND APPARATUS FOR EFFICIENTLY COMBINING SATELLITE NAVIGATION SIGNALS - A satellite signal navigation receiver can reduce channel resource usage and matched filter requirements by producing a single-bit local replica code from the combined incoming signals of each in view satellite. In one embodiment, the E | 12-04-2014 |
| 20140354473 | NAVIGATION SYSTEM USING SPREADING CODES BASED ON PSEUDO-RANDOM NOISE SEQUENCES - One embodiment of the invention provides a receiver for use in a navigation system comprising multiple transmitters. Each transmitter transmits a positioning signal comprising a pseudo-random noise (PRN) sequence corresponding to the respective transmitter. The receiver comprises a code module for supplying multiple PRN sequences corresponding to the respective multiple transmitters; and a correlator for correlating the PRN sequences supplied by the code module with an incoming signal. The multiple PRN sequences are based on a single Sidelnikov/Lempel/Cohn/Eastman (SLCE) generative sequence u | 12-04-2014 |
| 20140361925 | SIGNAL RECEIVING APPARATUS AND SIGNAL RECEIVING METHOD OF THE SAME - Disclosed is a signal receiving apparatus including: a receiver configured to comprise a plurality of terminals to receive different plural satellite signals; a storage portion configured to store characteristic information therein corresponding to the plurality of satellite signals; and a controller configured to determine which of the plurality of satellite signals is received by the plurality of terminals, based on the characteristic information, and configured to control the receiver to tune the plurality of satellite signals received by the plurality of terminals, according to the determination result. | 12-11-2014 |
| 20140375497 | Positioning Error Detection and Mitigation System and Method - A method for detecting and mitigating errors in a positioning system includes receiving a first signal from a global navigation satellite system (GNSS) indicative of a first position and a second signal from the GNSS indicative of a second position of a machine, determining a difference between the first position and the second position, detecting an error in a current position of the machine when the difference between the first and the second position exceeds a threshold of one of (a) a maximum distance given a maximum velocity, and (b) an actual distance determined based on an output of an inertial sensor on the machine, and mitigating the detected error in the current position of the machine by switching from an output of the positioning system to a position output determined based upon the output of the inertial sensor to update the current position. | 12-25-2014 |
| 20140375498 | System and Method for Asset Tracking Configuration of a Mobile Terminal - A system and method for asset tracking configuration of a mobile terminal. A mobile terminal can be designed to enable a remote determination of an asset position. In one embodiment, the mobile terminal can include a configured function that enables the mobile terminal to reconfigure mobile terminal operation (e.g., activation of a GPS engine). | 12-25-2014 |
| 20140375499 | SYSTEM FOR DETERMINING PRECISE POSITION INCLUDING A CHIRP RECEIVER UTILIZING PHASE PRECESSED CHIRP SIGNALS - A system for determining precise position includes a chirp receiver that processes broadcast chirp signals in the frequency domain to distinguish direct path signals from multipath signals. The chirp receiver processes the received chirp signals, which consist of respective pulsed frequency sweeps, by combining a received chirp signal with a synchronized locally generated chirp signal and phase adjusting and concatenating the results over multiple sweeps, based on estimated clock phase errors and expected phase rotations of the direct path signals, to produce a sine wave. The phase adjustment and concatenation allows the use of longer Fast Fourier Transforms (FFTs) that, in turn, provide increased accuracy of frequency estimation and separate component signals that are very close in frequency. The phase adjustment and concatenated signals are processed in the frequency domain using an FFT and a frequency corresponding to the direct path signal is identified by the lowest frequency bin in which power is above a predetermined noise threshold. The receiver then determines a time delay based on the identified frequency and uses the time delay to calculate accurate clock phase error. The system may then determine position based on associated pseudorange measurements. | 12-25-2014 |
| 20150009067 | EXTERNAL GNSS RECEIVER MODULE WITH MOTION SENSOR SUITE FOR CONTEXTUAL INFERENCE OF USER ACTIVITY - A method for contextual inference of user activity is disclosed. In one embodiment, an indication of the motion of a pole mounted sensing device comprising at least one motion sensor and a Global Navigation Satellite System (GNSS) receiver configured to at least generate raw GNSS observables is received from the at least one motion sensor. The indication of the motion of the pole mounted sensing device is correlated with an operation defined in a gesture library regarding GNSS data collect by the GNSS receiver at a time when the indication of the motion is detected. The indication and the GNSS data are stored. | 01-08-2015 |
| 20150022394 | RECEIVER ALIAS REJECTION IMPROVEMENT BY ADDING AN OFFSET - Methods, systems, computer-readable media, and apparatuses for isolating a desired GNSS signal from a plurality of GNSS signals with the same code are presented. In some embodiments, a method may comprise receiving, by a mobile device, the plurality of GNSS signals, wherein the plurality of GNSS signals include the desired GNSS signal. Subsequently, the method may comprise processing the received plurality of GNSS signals to a down-converted signal, wherein the down-converted signal has a lower frequency than the desired GNSS signal, and wherein the down-converted signal includes a first channel associated with a non-zero frequency. Moreover, the method may comprise processing the down-converted signal to offset the first channel by an offset frequency corresponding to a fraction of the first channel to create an offset down-converted signal. Furthermore, the method may comprise determining the desired GNSS signal from the offset down-converted signal based on the offset frequency. | 01-22-2015 |
| 20150022395 | METHOD AND RECEIVER FOR DETERMINING SYSTEM TIME OF A NAVIGATION SYSTEM - Receiver and methods for determining system time of a navigation system is disclosed. In one example, the receiver includes a baseband processing module and a calculation module. The baseband processing module is configured for obtaining satellite information from the navigation system. The calculation module is configured for estimating a pseudorange based on the satellite information; smoothing the pseudorange via a code; calculating clock bias and clock drift based on the smoothed pseudorange; and determining system time of the navigation system based on the calculated clock bias and clock drift. | 01-22-2015 |
| 20150035700 | Method and Apparatus for Distinguishing Direct GNSS Signals From Reflections - A global navigation satellite system (GNSS) enabled device that is configured to distinguish reflected GNSS signals from direct GNSS signals utilizing three-dimensional models of the terrain in the proximity of the GNSS enabled device. By utilizing the identification of reflected GNSS signals, the reflected GNSS signals can be excluded and/or weighted to achieve a more accurate location determination. | 02-05-2015 |
| 20150042511 | SYSTEM AND METHOD FOR CONTINUOUS CARRIER WAVE RECONSTRUCTION - A system and method of continuous carrier wave reconstruction includes a radio navigation receiver that includes one or more processors, memory coupled to the one or more processors, and an input for receiving a signal from a transmitter. The signal has a phase. The one or more processors are configured to obtain phase lock on the received signal, extract first phase information from the received signal, detect a loss in phase lock on the received signal, and extrapolate second phase information while phase lock is lost using a model of the phase. In some embodiments, the one or more processors are further configured to reconstruct the carrier signal based on the first and second phase information. In some embodiments, the one or more processors are further configured to scale the first and second phase information from a first nominal frequency of the received signal to a different second nominal frequency. | 02-12-2015 |
| 20150054682 | BEACON WITH INTERNAL GEOGRAPHIC LOCATION TRACKING THAT TRANSMITS THE LOCATION IN A REGISTRATION TRANSMISSION - Systems, methods and apparatus are provided through which in some implementations a geographic location of a beacon is determined by a component integrated within or in close proximity to the beacon and the geographic location is communicated to an external network using a wireless communications channel between the beacon and the external network. | 02-26-2015 |
| 20150054683 | BEACON WITH INTERNAL GEOGRAPHIC LOCATION TRACKING THAT TRANSMITS THE LOCATION IN A BEACON TRANSMISSION - Systems, methods and apparatus are provided through which in some implementations a geographic location of a beacon is determined by a component integrated within or in close proximity to the beacon and the geographic location is communicated to an external network using a wireless communications channel between the beacon and the external network. | 02-26-2015 |
| 20150054684 | INFORMATION PROCESSING APPARATUS, METHOD AND INFORMATION PROCESSING SYSTEM - An information processing apparatus capable of detecting an emergency signal includes a first obtainment unit configured to obtain positional information representing a current position of the information processing apparatus; a selection unit configured to select one of a plurality of broadcast stations using the positional information obtained by the first obtainment unit; a reception unit configured to receive a radio wave signal at a frequency of the broadcast station selected by the selection unit; and a first output unit configured to output an audio signal obtained by demodulating the radio wave signal received by the reception unit. | 02-26-2015 |
| 20150070211 | Method, System and Device for Position Determination with Predicted Ephemeris - Method, system, and device are provided for position determination with the use of predicted ephemeris to reduce the time-to-first-fix. The method includes: in a device, receiving broadcast orbit data and clock states from a plurality of satellites to determine first assistance data for the plurality of satellites, and numerically predicting first ephemeris for the plurality of satellites using the first assistance data. The method also includes: in a server system, receiving precise orbit data and accurate satellite clock states from a global GNSS service network to determine second assistance data; in a device, receiving the second assistance data and numerically predicting second ephemeris using the second assistance data. The method further includes: in a device, receiving satellite signals from a plurality of satellites, checking the period of validity of the first predicted ephemeris and the second predicted ephemeris respectively to select a predicted ephemeris from both the first predicted ephemeris and the second predicted ephemeris. | 03-12-2015 |
| 20150077288 | Time To First Fix Optimization In A Satellite Navigation Receiver - A method and a system for reducing time to first fix (TTFF) in a satellite navigation receiver (SNR) includes constructing an integrated satellite constellation system (ISCS) for transmitting navigation signals over a combination of a first carrier frequency, a second carrier frequency, and a third carrier frequency. The ISCS includes a predetermined number of geosynchronous satellites positioned at first predetermined geographic coordinates in a geosynchronous orbit and a predetermined number of geostationary satellites positioned at second predetermined geographic coordinates in a geostationary orbit. The ISCS transmits navigation data to the SNR over the combination of the first carrier frequency, the second carrier frequency, and the third carrier frequency in reduced time, thereby reducing the TTFF in the SNR. The method and the system also reduce TTFF in a hot start mode and a snap start mode of the SNR by utilizing the third carrier frequency as a data channel. | 03-19-2015 |
| 20150084813 | GPS POSITIONING SYSTEM - A system comprises a processing server programmed to determine which GPS satellites are currently available for use within a field of view of the processing server. The processing server is programmed to transmit to a terrestrial beacon information about a GPS channel of a GPS satellite which is not currently within the field of view of the processing server. The terrestrial beacon is configured to broadcast a navigation signal useful to determine location using the identified GPS channel. The processing server transmits the ephemeris of the terrestrial beacon to a GPS receiver. The receiver receives the signal from the beacon, and uses the ephemeris received from the processing server for calculating the receiver's location. | 03-26-2015 |
| 20150091750 | FILTERING FOR GLOBAL POSITIONING SYSTEM (GPS) RECEIVERS - Devices and methods are directed to estimating a position of the device/user using a delta range measurement (DRM) module to measure a range difference between first and second range values for first and second time instants based on, e.g., carrier phase measurements. The time period between the first and second time instants may be greater than a periodic interval at which a new phase value is sampled. This architecture of the DRM module provides extended delta ranges values which also overlap in time, enabling a combination of improved dilution of precision and keeping fast generation of delta range values suitable for use in continuous filtering. A filter, e.g., a Kalman filter, may be used compute current estimates of two positions, or a combination of a position and a position difference, of the device based at least on the range difference and a priori estimate(s) of the position(s) of the device. | 04-02-2015 |
| 20150097723 | SYSTEM FOR SHARING ATMOSPHERIC DATA - A system for sharing data between aircraft including a GPS unit for establishing a first aircraft's location and altitude from a network of global satellites and an automatic dependent surveillance broadcast (ADS-B) unit broadcasting a first aircraft's identification as well as it's location and altitude. The system also includes a mechanism for measuring the wind speed and turbulence at the location of the first aircraft and for broadcasting that information to other aircraft in the area. A second aircraft as well as other aircraft also include an ADS-B receiver for receiving such information. | 04-09-2015 |
| 20150097724 | METHOD AND APPARATUS OF GNSS RECEIVER HEADING DETERMINATION - The present invention relates to processing information generated by GNSS receivers received signals such as GPS, GLONASS, etc. GNSS receivers can determine their position in space. The receivers are capable of determining both coordinates and velocity of their spatial movement. When a receiver is used in any machine control systems, velocity vector heading (in other words, velocity vector orientation) should be determined along with velocity vector's absolute value. Angle, determining velocity vector orientation, is calculated based on velocity vector projections which are computed in navigation receivers. The accuracy of velocity vector orientation calculated based on velocity vector projections strongly enough depends on velocity vector's absolute value. To enhance the accuracy, a method of smoothing primary estimates of velocity vector orientation angles using a modified Kalman filter has been proposed. The bandwidth of this filter is varied depending on current estimates of velocity vector's absolute value which were calculated based on the same velocity vector projections. | 04-09-2015 |
| 20150097725 | METHOD FOR REDUCING GPS RECEIVER POSITIONING TIME - A method for reducing the positioning time of a GPS receiver is disclosed. In response to a request from a user function for positioning data a GPS management section instructs a device control section to lower the functions of a group of components. The lowering of the functions of the components reduces the noise level. The GPS management section operates the GPS receiver. The GPS receiver executes an acquisition process in an environment with a low noise level. After completion of the acquisition process, the functions of the component are restored. | 04-09-2015 |
| 20150102961 | ELECTRONIC DEVICE AND RECEPTION CONTROL METHOD - An electronic device includes: a satellite signal receiving section that receives a satellite signal with which positioning information is overlapped from a positioning satellite; a reception control section that controls driving of the satellite signal receiving section; and a detecting section that detects a state change of the electronic device, in which the reception control section allows the satellite signal receiving section to enter a driving state when the detecting section detects the state change to receive the satellite signal. According to this electronic device, it is possible to reduce a TTFF at the positioning start, and to reduce power consumption in the satellite signal reception. | 04-16-2015 |
| 20150116146 | ANOMALY DETECTION USING AN ANTENNA BASELINE CONSTRAINT - Systems and methods are provided for monitoring carrier phase anomalies in a range finding system. A relative carrier phase between first and second antennas is predicted as a function of a relative position between the two antennas. A relative carrier phase between the first and second receivers is measured based upon at least one transmitted signal received at each of the first and second antennas. An anomaly detection metric is calculated as a difference between the measured relative carrier phase and the predicted relative carrier phase. It is then determined if an anomaly is present according to the anomaly detection metric. | 04-30-2015 |
| 20150123844 | METHODS AND SYSTEMS FOR MOBILE DEVICE CLOCK MANAGEMENT - Disclosed are methods, systems and/or devices to calibrate a network time by acquisition of satellite positioning system (SPS) signals and different instances of time, and time-tagging SPS times according to the network time. In particular, the network time may be calibrated based, at least in part, on a first difference between first and second SPS times obtained at two SPS position fixes and a second difference between corresponding first and second time stamps. | 05-07-2015 |
| 20150123845 | GPS Positioning Method for Mobile Terminal, and Mobile Terminal - A GPS positioning method for a mobile terminal, and a mobile terminal are provided. The method includes: after GPS positioning is started, acquiring a first cell identifier of a first cell in which the mobile terminal is located; acquiring, according to the first cell identifier, first latitude and longitude information corresponding to the first cell identifier from a correspondence table stored on the mobile terminal, where the correspondence table includes a cell identifier and latitude and longitude information corresponding to the cell identifier; and with reference to the first latitude and longitude information, and time information and ephemeris information that are acquired in advance, performing GPS positioning on the mobile terminal by using a GPS receiver of the mobile terminal. | 05-07-2015 |
| 20150145723 | SYSTEM AND METHOD FOR DETERMINING THE POSITION ERROR OF A SATELLITE LOCALIZATION RECEIVER - A system and method are provided for determining a distribution of a position error of a receiver of localization signals, the signals being sent by at least one satellite. The system includes the receiver, one position of which is known as first position and is affected by an error, known as first error, having a distribution, known as first distribution, a first device for determining positions of the satellite(s), known as second positions, a device for transmitting the second position of the first determination device to the receiver, and the first distribution is defined by at least one first cumulant, of higher-than-second order. | 05-28-2015 |
| 20150309181 | METHOD FOR PROVIDING A GNSS SIGNAL - The invention relates to a method for providing a global navigation satellite system signal, referred to as a GNSS signal in the following, for determining a position of a vehicle, the method including: receiving an unfiltered GNSS signal, filtering the unfiltered GNSS signal on the basis of an ambient condition around the vehicle, and emitting the filtered GNSS signal. | 10-29-2015 |
| 20150316651 | TAPERED COHERENT INTEGRATION TIME FOR A RECEIVER OF A POSITIONING SYSTEM - Approaches to signal processing using tapered coherent integration time period durations. In this regard, signal processing of received signals (e.g., received satellite navigation signals) may be received at a receiver. The received signals may be processed in a coherent integration process whereby the duration of subsequent coherent integration time periods are reduced in response to errors resulting from frequency instability that grows in time. As such, relatively long durations for coherent integration times may result in improved signal to noise ratios (SNRs) for integrated signals in initial coherent integration time periods. However, as errors that are introduced into the signal processing due grow over time, the durations of subsequent coherent integration time periods may be reduced, thus reducing the effect of the error in a SNR of resulting integrated signals. In turn, receiver sensitivity may be improved. | 11-05-2015 |
| 20150316652 | SYSTEMS AND METHODS FOR MANAGING THE COEXISTENCE OF A GNSS RECEIVER AND A RAT TRANSCEIVER - Various arrangements are presented for managing coexistence of a global navigation satellite system (GNSS) receiver with a radio access technology (RAT) transceiver. A coexistence manager may receive an indication of a characteristic of a RAT transceiver for a scheduled operating event. Based on the characteristic of the RAT transceiver for the operating event, the coexistence manager may select a space vehicle of a GNSS to use for a location determination by the GNSS receiver. The GNSS receiver may then receive a signal from the space vehicle of the GNSS during the operating event of the RAT transceiver. Location determination using the signal received from the space vehicle received during the operating event of the RAT transceiver may then occur. | 11-05-2015 |
| 20150338519 | JOINT PROCESSING OF GNSS PSEUDORANGE SIGNALS - An approach to joint processing of GNSS signals to determine a receiver location and common mode bias associated with grouped records corresponding to GNSS signals. In this regard, a receiver may acquire signals from a GNSS space vehicle over a relatively long period of time. In turn, records corresponding to received signals may be stored and grouped. The grouping of records may be based on assumptions of a common-mode bias for certain records (e.g., records acquired within a given duration of an observation time period). Upon acquisition of a suitable number of records, an over-determined system may be established that is used in iterative processing to solve for location and/or bias values associated with the respective common-mode bias for each group of records. As such, improved receiver performance may be realized. | 11-26-2015 |
| 20150338520 | MULTIPLE CONTENT MESSAGE BASE-ROVER ARCHITECTURE - A multiple content message (MCM) base apparatus configured to generate a composite base data stream is proposed. A multiple content message (MCM) rover apparatus configured to generate a set of fast frequency baseline data is proposed. | 11-26-2015 |
| 20150342313 | Three Component Binder Clip for use in personal accessory designs - A clip suitable for holding money, credit cards and document is described. The clip includes features that enable use of decorative leather, cloth, rubber, polyester or polyurethane covers that can be interchanged and conceal the inner, typical metal, workings of the clip. The clip further includes features that allow control of positioning of the lever arms of the clip for ease of use as a money clip and expansion of the use as a stand for electronic devices. | 12-03-2015 |
| 20150355336 | RELATIVE GPS DATA REFINEMENT - In some examples, a system to produce refined location information for multiple vehicles may aggregate GPS coordinates collected from each of multiple devices over a period of time, estimate a location for each of the multiple devices at intervals during the period of time, track the locations for each of the multiple devices over the period of time, and determine a current location, on a road, of the vehicle corresponding to each of the devices based on a detected trend of the tracked locations for each of the multiple devices over the period of time. | 12-10-2015 |
| 20150378024 | ADAPTIVE SATELLITE SEARCH SUCCESSION - A global navigation satellite system (GNSS) receiver includes a processor to determine whether a first satellite is in view of GNSS receiver; whether a second satellite is in view of GNSS receiver when first satellite is in view of GNSS receiver; and whether a third satellite is in view of GNSS receiver when first satellite is not in view of GNSS receiver. Second satellite was previously determined more likely to be in view when first satellite is in view based on a first average distance between first satellite and second satellite based on a first orbit of first satellite and a second orbit of second satellite. Third satellite was previously determined more likely to be in view when first satellite is not in view based on a second average distance between first satellite and third satellite based on first orbit of first satellite and a third orbit of third satellite. | 12-31-2015 |
| 20160003947 | DETERMINING CONTEXT OF A MOBILE COMPUTER - A mobile computer may determine it is located in a vehicle or a conveyance based on a measured distance and satellite related positioning information. | 01-07-2016 |
| 20160025858 | ELECTRONIC SATELLITE FEED SWITCHER - A feed switcher for a satellite telecommunication system includes a microcontroller, a first relay, and a second relay. The first relay receives as inputs a first satellite feed and a second satellite feed. The second relay receives as inputs a third satellite feed and an output of the first relay. The output of the first relay includes the first satellite feed or the second satellite feed. The microcontroller has a first port and a second port, and the output of the second relay is based on whether at least one of the first port and the second port is open. Therefore, the output of the second relay may be either the output of the first relay or the third satellite feed. | 01-28-2016 |
| 20160041252 | PNT SENSOR RELAY COMMUNICATION SYSTEM - A PNT sensor short-range relay communication system includes an electronic PNT sensor module configured to determine a first position of the PNT sensor module and to output a PNT signal indicating a second position of the PNT sensor module with respect to the first position. A mobile relay module is in signal communication with the PNT sensor module. The mobile relay module is configured to communicate the PNT signal to at least one terminal device located remotely from the PNT sensor module and the mobile relay module. In this manner, positional information can be determined without relying on a satellite navigation system. | 02-11-2016 |
| 20160041267 | Orbital Determination (OD) Of Geosynchronous Satellites - Technology for determining an orbit of a geosynchronous satellite is described. A ground station can receive a transponded (RF) signal from a relay satellite. The relay satellite can receive an RF signal from the geosynchronous satellite and transpond the RF signal to create the transponded RF signal. The ground station can identify a second Doppler shift associated with the transponded RF signal received at the ground station from the relay satellite. The RF signal received at the relay satellite from the geosynchronous satellite can be associated with a first Doppler shift. The ground station can determine a frequency of the transponded RF signal received at the ground station from the relay satellite. The first Doppler shift associated with the RF signal transmitted from the geosynchronous satellite to the relay satellite can be calculated using the frequency of the transponded RF signal and the second Doppler shift associated with the transponded signal. The orbit of the geosynchronous satellite can be determined based on the first Doppler shift associated with the RF signal. | 02-11-2016 |
| 20160054460 | Earthquake and Displacement Early Warning System - Novel solutions, which can include devices, systems, methods, than can measure earthquakes and other displacement events. Some solutions feature the integration of real-time, high-rate global navigation satellite system (“GNSS”) displacement information with acceleration and/or velocity data within a single device to create very high-rate displacement records. The mating of these two instruments allows the creation of a new, very high-rate displacement measurement device that has the full-scale displacement characteristics of GNSS and high-precision dynamic motions of seismic technologies. Such a device can be used for earthquake early warning studies and other mission critical applications, such as volcano monitoring, building, bridge and dam monitoring systems. | 02-25-2016 |
| 20160091608 | Determination of a Ground Receiver Position - Technology for determining a geographical location of a ground receiver is disclosed. A plurality of radio frequency (RF) signals from a plurality of RF signal carriers may be received at the ground receiver. The plurality of RF signal carriers may include satellites operated by a foreign entity or non-global positioning system (non-GPS) satellites. The ground receiver may measure a Doppler shift associated with each of the plurality of RF signals. The geographical location of the ground receiver may be determined in X, Y and Z coordinates based in part on the Doppler shift associated with each of the plurality of RF signals. | 03-31-2016 |
| 20160139271 | GNSS POSITIONING SYSTEM EMPLOYING A RECONFIGURABLE ANTENNA SUBSYSTEM - The system includes a reconfigurable GNSS antenna subsystem that dynamically reconfigures one or more antenna parameters to change one or more operating characteristics of an antenna based on environmental conditions and/or the presence of interfering signals to improve the quality of GNSS satellite signal reception. The system analyses the received signals to determine if the GNSS satellite signals are sufficiently above received noise, if interfering signals are present, and/or if multipath signals are adversely impacting position calculations. Based on the analysis, the reconfigurable antenna subsystem selectively and dynamically reconfigures one or more parameters to change one or more operating characteristics of the antenna. As the conditions change, the reconfigurable antenna subsystem may dynamically reconfigure one or more of the antenna parameters accordingly. | 05-19-2016 |
