| Entries |
| Document | Title | Date |
|---|
| 20080218407 | Digital camera with GNSS picture location determination - A digital camera for providing a short burst of global navigation satellite system (GNSS) signal samples in a picture data file with an approximate time for reading by a computer apparatus some time later for determining the geographical location and an accurate time of the picture. An apparatus and method for determining a GNSS position of an event where an event capture device writes a short burst of GNSS signal samples with an approximate time into an event data file and a GNSS sample processor reads the event data file some time later for determining the geographical location and an accurate time of the event. | 09-11-2008 |
| 20080238765 | Satellite Clock Prediction - Devices and methods are described for determining position information without broadcast ephemeris data for a spanned time period using predictions of future satellite states. These predictions include predictions of satellite clock bias. During the spanned time period, broadcast ephemeris is received such that a broadcast-ephemeris-derived satellite clock bias may be determined. The predictions of satellite clock bias subsequent to the receipt of the broadcast ephemeris may then be corrected based upon the broadcast-ephemeris-derived satellite clock bias. | 10-02-2008 |
| 20080252515 | SYSTEM FOR MONITORING RAILROAD CARS - A system for monitoring railroad cars comprising a hatch cover assembly including a cover body, a sensor, a wireless transmitter for transmitting data received from the sensor, a wireless receiver for receiving the data from the wireless transmitter, and a satellite transmitter for transmitting the data to a satellite. The wireless receiver and the satellite transmitter are attached to the hatch cover assembly. In one embodiment, the sensor is a pressure sensor having a sensing unit situated in the plenum of a vented hatch cover. In another embodiment, the sensor is an air flow sensor having a sensing unit situated in the plenum of a vented hatch cover. In another embodiment, the sensor is a chain tension sensor attached to a handbrake chain. In another embodiment, the sensor is a hatch cover position attached to the hatch cover assembly. | 10-16-2008 |
| 20080252516 | Determining a Geolocation Solution of an Emitter on Earth Using Satellite Signals - Embodiments provide systems and methods for determining the geolocation of an emitter on earth. A solution is obtained from two TDOA measurements that need not be acquired at the same time. A solution is obtained from a TDOA measurement and an FDOA measurement that need not be acquired at the same time and need not be coming from the same satellite pair. A location of an emitter can be determined from minimizing a cost function of the weighted combination of the six solutions derived from the two TDOA measurements and the two FDOA measurements, where the weight of each solution in the combination is determined based on the intersection angle of the two curves that define the possible locations of the emitter based on the TDOA and/or FDOA measurements. | 10-16-2008 |
| 20090009386 | METHOD AND APPARATUS FOR COMBINING MEASUREMENTS AND DETERMINING CLOCK OFFSETS BETWEEN DIFFERENT GLOBAL NAVIGATION SATELLITE SYSTEMS - Method and apparatus for processing satellite signals from a first satellite navigation system and a second satellite navigation system is described. In one example, at least one first pseudorange between a satellite signal receiver and at least one satellite of the first satellite navigation system is measured. At least one second pseudorange between the satellite signal receiver and at least one satellite of the second satellite navigation system is measured. A first difference between a first time reference frame of the first satellite navigation system and a time reference and a second difference between a second time reference frame of the second satellite navigation system and the time reference are obtained. The at least one first pseudorange and the at least one second pseudorange are combined using the first and second differences in time references. | 01-08-2009 |
| 20090102707 | SYSTEMS AND METHODS FOR TRANSPARENCY MAPPING USING MULTIPATH SIGNALS - Systems and methods for mapping a structure detect wireless signals, including at least one multipath signal that has experienced at least one reflection against a portion of the structure prior to the detection. The wireless signals are analyzed to estimate reflection points for the multipath signal(s), and a map of at least the portion of the structure is generated based on the estimated reflection points. | 04-23-2009 |
| 20090146871 | METHOD AND APPARATUS FOR MANAGING TIME IN A SATELLITE POSITIONING SYSTEM - Method and apparatus for time management in a position location system is described. In one example, a time relation is received at a server. The time relation includes a relationship between an air-interface time of a base station and a satellite time for a satellite constellation from a first satellite positioning system (SPS) receiver. The time relation is then stored in the server. In another example, satellite time is determined at a first time for a satellite constellation at an SPS receiver. A time offset is determined between the satellite time and an air-interface time of a base station. The time offset is stored within the SPS receiver. A position of the SPS receiver is computed at a second time using satellite measurements and the stored time offset. | 06-11-2009 |
| 20090195445 | SYSTEM AND METHOD FOR SELECTING PARAMETERS BASED ON PHYSICAL LOCATION OF A COMPUTER DEVICE - A system to predefine multiple allowed activities of a wireless computing device based on geographic location and, specifically, for security parameters associated with wireless access of such devices. Wireless access can be controlled on a movable computing device by ascertaining a geographic location of computing device, using a position sensing device; coupling motion sensing device with computing device; determining whether geographic location is within a predefined zone; and generating a command for controlling wireless access in response to determining. Commands can be derived from a predetermined table of allowed wireless activities in a geographically defined area and, specifically, for security parameters associated with the computing device. Wireless activities can include Internet protocols, instant messaging, email, and newsgroups. The commands can include blocking all wireless access, restricting file sharing, restricting Internet access, restricting email, restricting newsgroups, restricting instant messaging, and generating reports. | 08-06-2009 |
| 20090201196 | METHOD AND APPARATUS FOR GENERATING AND DISTRIBUTING SATELLITE TRACKING INFORMATION - A method and apparatus for generating and distributing satellite tracking data to a remote receiver is disclosed. The method for includes extracting from satellite-tracking data initial model parameters representing a current orbit of at least one satellite-positioning-system satellite, computing an orbit model using the initial model parameters, wherein a duration of the orbit model is longer than a duration of the satellite-tracking data, comparing, for an overlapping period of time, the orbit model to the satellite-tracking data; and adjusting the orbit model to match the satellite tracking data for the overlapping period of time so as to form an adjusted orbit model. The adjusted orbit model comprises the long-term-satellite-tracking data. | 08-13-2009 |
| 20090212999 | Apparatus and method of correcting moving direction of pedestrian - Provided are an apparatus and a method of correcting a moving direction of a pedestrian, which can estimate a pedestrian location accurately by correcting error components that are included in a moving direction angle, detected by a terrestrial magnetism sensor. The apparatus for correcting a pedestrian moving direction, including a signal receiving unit which estimates a pedestrian location using a satellite signal from a satellite, a sensor unit which detects a first moving direction angle using a terrestrial magnetism sensor, and a control unit which calculates a second moving direction angle using a pedestrian location estimated by using a satellite signal of good reception quality and corrects the first moving direction angle detected by the terrestrial magnetism sensor by using the calculated second moving direction angle. | 08-27-2009 |
| 20090273511 | Method of operating a satellite navigation receiver - A receiver operating with satellite navigation signals estimates its position by means of a multiplicity of signals each transmitted by another satellite. A subset of satellites is used to calculate the position estimation and checking the pseudoranges of all received satellite signals that did not contribute to this particular estimate with respect to their consensus with this estimate. The subset with the best consensus is determined by combining the subsets with respect to the consensus with all ranging sources in view. Consensus in this context refers to pseudoranges that coincide in a position solution in a consistent way. The satellites with a bias in pseudorange higher than a threshold are identified as faulty satellites, after knowing all consistent satellites. This identifying information is then used to exclude the faulty satellites for the determination of position, velocity, and time in the receiver. | 11-05-2009 |
| 20090278733 | METHOD AND APPARATUS FOR LOCATING THE SOURCE OF AN UNKNOWN SIGNAL - A method of locating the source of an unknown signal comprises the steps of:
| 11-12-2009 |
| 20090278734 | Data Transfer - A portable electronic device comprises a controller and a display. The controller receives vector data on a position of a user of the portable device from a satellite positioning sensor associated with the user, and scalar data on movement of the user from at least one motion sensor associated with the user. The controller stores data based on the vector data and feeds a scalar parameter proportional to the scalar data to the display. The display displays the scalar parameter. | 11-12-2009 |
| 20090284410 | Vehicle System And Earth-Based Receiver System - In a vehicle, a vehicle system is provided that includes a position determination module for determining the position of the vehicle using an estimation of the error of satellite signals which are received by an earth-based receiver system, and an integrity module for determining an integrity risk for the position data for a vehicle, the risk being derived using time determinations performed by a satellite navigation system. When a threshold value for the integrity risk for the position data is exceeded, the vehicle system generates a warning signal which, by means of modules that are connected to the vehicle system, is designed to prevent the use of the position data for the vehicle. The integrity risk is determined using an estimated value for the error in the received satellite signal, and the receiver system functionally interacts with a plurality of satellites to determine and transmit data to a vehicle system containing a position determination module for determining the position of the vehicle. | 11-19-2009 |
| 20090289840 | Process for Optimizing Status Notifications in the Case of a Navigation Satellite System - A process for optimizing status notifications in the navigation satellite system includes the following steps: the determination of information concerning a communication network of the navigation satellite system; and the transmission of the determined information as a status notification in at least one navigation message. | 11-26-2009 |
| 20090303112 | SYSTEM AND METHOD FOR REFINING A WLAN-PS ESTIMATED LOCATION USING SATELLITE MEASUREMENTS IN A HYBRID POSITIONING SYSTEM - This disclosure describes a system and method for refining a WLAN-PS estimated location using satellite measurements. In some embodiments, the disclosure relates to a method of determining the location of a WLAN and satellite enabled device by using two or more satellite measurements to refine an initial WLAN based location determination. The method can include estimating a position of the WLAN and satellite enabled device using a WLAN positioning system, gathering satellite location measurements from at least two satellites, determining an uncertainty area around the WLAN location estimate based on the expected error of the WLAN location estimate, wherein the uncertainty area has a plurality of possible location solutions, and determining the device location estimate inside the WLAN location uncertainty that best satisfies the satellite measurements. | 12-10-2009 |
| 20090303113 | METHODS AND SYSTEMS FOR IMPROVING THE ACCURACY OF EXPECTED ERROR ESTIMATION IN A HYBRID POSITIONING SYSTEM - This disclosure describes methods and systems for improving the accuracy of expected error estimation in a hybrid positioning system. In some embodiments, the method of determining an expected error in a location determination of a WLAN and satellite enabled device can include determining a WLAN location estimate and an expected error estimate for the WLAN location estimate, obtaining measurements from at least two satellites, and determining the expected error of the location determination by evaluating the consistency of the satellite positioning system measurements to the WLAN positioning system location estimation. | 12-10-2009 |
| 20100019959 | SATELLITE ORBITAL DATA COMPRESSION METHOD, SATELLITE ORBITAL DATA PROVIDING METHOD, SATELLITE ORBITAL DATA EXPANSION METHOD, SERVER, AND POSITIONING APPARATUS - A compression method of satellite orbital data includes: calculating an estimate value of a first parameter from a predetermined calculation using either another parameter value or a first parameter in a different unit term, and replacing the first parameter value with the difference value between the estimate value and the first parameter value. | 01-28-2010 |
| 20100079332 | ENHANCED DATABASE INFORMATION FOR URBAN NAVIGATION - Methods and apparatus are provided for estimating position location of a mobile device. | 04-01-2010 |
| 20100085247 | PROVIDING EPHEMERIS DATA AND CLOCK CORRECTIONS TO A SATELLITE NAVIGATION SYSTEM RECEIVER - A device can access scaled values and scaling factors, which are used to convert the scaled values into coefficients and residuals. The coefficients and residuals can in turn be used with time-dependent functions to reconstruct predicted ephemeris data, including clock correction data, for satellite navigation system satellites. Ephemeris data that is broadcast from any of the satellites can be used to update the calculated ephemeris data. | 04-08-2010 |
| 20100103030 | SEISMIC MEASUREMENT SYSTEM INCLUDING GPS RECEIVERS - A system for determining positions of fixed-position satellite signal receivers that have restricted views of the sky includes a data recording control center, and one or more base satellite signal receivers with associated antennas that together have substantially unrestricted views of the sky. The system batch processes range information provided by the fixed-position receivers over an extended period of time, determining the three dimensional position of a given fixed-position receiver using range data from at least three relatively short time intervals associated with different sky positions in which the receiver is tracking any two or more satellite signals simultaneously. | 04-29-2010 |
