Class / Patent application number | Description | Number of patent applications / Date published |
342357650 | Involving a sensor measurement for aiding acquisition or tracking (IPC) | 15 |
20110063167 | USING MAGNETOMETER WITH A POSITIONING SYSTEM - A mobile station determines an approximate latitude using a measured feature of the Earth's magnetic field. An approximate longitude may also be determined. The mobile station uses the approximate latitude and longitude, if determined, to assist in determining a position fix for the mobile station, e.g., by determining a list of visible satellites in a satellite positioning system (SPS) during search and acquisition of satellite signals and/or using the approximate position as a seed position in the position computation. The feature of the Earth's magnetic field may be, e.g., inclination or vertical intensity, and may be determined using data from a three-dimensional magnetometer and a three-dimensional accelerometer. An instantaneous value of the magnetic field feature may be averaged to reduce the affects of motion and the presences of large metallic masses. | 03-17-2011 |
20110068979 | REDUCING COMPLEXITY OF CALCULATIONS PERFORMED BY A NAVIGATION SYSTEM RECEIVER - In at least some embodiments, an electronic device includes a navigation system receiver and a receiver motion estimator coupled to the navigation system receiver. The receiver motion estimator determines and provides a receiver motion estimation to the navigation system receiver to reduce complexity of a satellite signal search operation performed by the navigation system receiver. | 03-24-2011 |
20110122023 | INERTIA/GNSS NAVIGATION SYSTEM - The invention relates to an inertia GNSS navigation System linked to a vehicle comprising: | 05-26-2011 |
20110205113 | FREQUENCY AIDING METHOD AND SYSTEM FOR NAVIGATION SATELLITE RECEIVER WITH CRYSTAL OSCILLATOR FREQUENCY HYSTERESIS - A method and apparatus for estimating oscillator signal variation due to temperature and for providing an estimated frequency to a GPS receiver in order to assist the GPS receiver to acquire the signals quickly is disclosed. A temperature sensor is closely thermally coupled with the crystal oscillator in the GPS receiver and during GPS tracking mode, when the error in the oscillator signal is known with precision, outer bounds of TCXO frequency at given temperatures are maintained, which may correspond to rising and falling temperature conditions. During acquisition mode, an estimated frequency value is provided to the GPS receiver based on a determined average of these bounds. Optionally, an uncertainty factor associated with the frequency estimated may also be provided. The two bounds take into account the hysteresis effects of the oscillator signal drift due to temperature so that a more accurate initial frequency estimate can be provided to the GPS receiver, thus reducing its average time to first fix. | 08-25-2011 |
20120139785 | SYSTEM FOR COLLECTING AND MANAGING RAINFALL ATTENUATION AND RAINFALL INTENSITY ON SATELLITE COMMUNICATIONS SYSTEM - Provided is a system for collecting and managing rainfall attenuation data and rainfall intensity data in a satellite communication system. The system may include: a satellite transmitter to transmit a satellite beacon signal; a Global Positioning System (GPS) to transmit a GPS signal; at least one data collecting apparatus to generate rainfall attenuation data about the satellite beacon signal when the satellite beacon signal is received from the satellite transmitter, and to generate rainfall intensity data within a valid path length of rainfall attenuation, to extract time information from the GPS signal, and to assign the time information to the rainfall attenuation data and the rainfall intensity data; and a data managing apparatus to receive, from the at least one data collecting apparatus, the rainfall attenuation data and the rainfall intensity data assigned with the time information, and to manage the received rainfall attenuation data and rainfall intensity data. | 06-07-2012 |
20130099968 | GNSS POSITIONING IN ELEVATOR - The present invention discloses a radio beacon coupled to an altimeter, for GPS positioning in an elevator, configured to broadcast signals forcing a nearby GPS receiver to read constant latitude and constant longitude, associated with the position of the elevator shaft, and altitude associated with the altimeter reading. The acquired in-elevator position can serve as an initial fix for further navigation, particularly indoors. | 04-25-2013 |
20130176170 | REVERSE FREQUENCY AND TIME AIDING - The present system relates to a GNSS receiver that includes a processor. The processor is configured to receive a temperature signal from a temperature sensor indicating an operating temperature of an resonator. The processor is also configured to compute a frequency and a frequency correction data of the resonator based on the temperature and a frequency model of the resonator. The processor then transmits the frequency correction data to an RF receiver which utilizes the frequency correction data and the resonator to receive and RF signal. | 07-11-2013 |
20130234887 | COOPERATIVE CALIBRATION OF PLATFORM SHARED VOLTAGE CONTROLLED OSCILLATOR - A mobile communication device includes a global navigation satellite system (GNSS) receiver for receiving GNSS signals, a radio frequency (RF) receiver for receiving RF signals and a voltage controlled oscillator supplying an oscillator signal to the GNSS receiver and the RF receiver. The GNSS receiver and the RF receiver use the oscillator signal to receive the GNSS signals and the RF signals. The mobile communication device also includes a processor for initializing and/or adjusting a model of a frequency behavior of the voltage controlled oscillator, and uses the model to track the GNSS signals when computing a location of the mobile communication device. | 09-12-2013 |
20140333477 | METHOD, APPARATUS AND SYSTEM FOR REDUCING POWER CONSUMPTION IN GNSS RECEIVERS - Inventive aspects include a method, apparatus, and system for reducing power consumption in GNSS receivers. Such may include receiving timing and accuracy parameters, processing pre-positioning information in preparation for signal acquisition or signal track, determining whether a plurality of satellites are in-view, applying an ON signal to one or more components of an analog signal processing section and to one or more components of a digital signal processing section, and within a dynamic time window, acquiring signals of the plurality of in-view satellites and simultaneously applying, in real-time, signal sensing logic to the acquired signals, until determining that a position fix of the electronic receiver is obtained. Responsive to the determination that the position fix is obtained, an OFF signal may be applied to the one or more components of the analog signal processing section and to the one or more components of the digital signal processing section. | 11-13-2014 |
20150316654 | Determining GPS Mode of Operation Based Upon Accelerometer Input - An electronic device is operable to determine a Global Positioning System (GPS) mode of operation based upon accelerometer input. The electronic device includes a communications interface, a GPS receiver, an accelerometer module, and processing circuitry. The processing circuitry receives an accelerometer output from the accelerometer module and compares the accelerometer output to a plurality of acceleration signatures. Based upon the comparison, an acceleration profile is selected. A GPS mode of operation is selected for the GPS receiver based upon the acceleration profile. The acceleration profile can be selected based upon one or more types of communications being serviced by the communications interface. In one embodiment, a selected GPS mode of operation selected corresponds to a distinct operating environment. | 11-05-2015 |
20150346346 | METHOD OF SELECTING SATELLITE FOR POSITIONING IN GLOBAL NAVIGATION SATELLITE SYSTEM, SATELLITE SIGNAL RECEIVER, AND METHOD OF CREATING DOP INDEX - There is provided a method of selecting a satellite for positioning in a global navigation satellite system, which includes: receiving satellite signals from satellites that a receiver can receive; calculating DOP where pseudorange weight is applied for each of satellite signal combinations including at least four or more of the satellite signals by the receiver; and selecting a satellite signal combination having the smaller DOP than a standard in the satellite signal combinations by the receiver. | 12-03-2015 |
20160025861 | METHOD AND SYSTEM FOR INDOOR GLOBAL NAVIGATION SATELLITE SYSTEM DETECTION UTILIZING LOW-EARTH ORBIT SATELLITE SIGNALS - A system for indoor global navigation satellite system detection utilizing low Earth orbit satellite signals is disclosed and may include in a mobile communication device comprising a low Earth orbit (LEO) satellite signal receiver path and a medium Earth orbit (MEO) satellite signal receiver path: receiving a LEO RF satellite signal utilizing said LEO satellite signal receiver path, measuring a received signal strength indicator (RSSI) for the received LEO signal, calculating an expected received MEO signal strength based on the measured RSSI, and configuring the wireless receiver to determine its position using LEO signals or MEO signals based on the calculated MEO signal strength and measured RSSI. The MEO path may be powered down when the calculated expected signal strength is below a threshold level for positioning purposes. The MEO path may be powered up when the calculated expected signal strength increases above a threshold level for positioning purposes. | 01-28-2016 |
20160178753 | DETECTION AND CORRECTION OF CARRIER PHASE INCONSISTENCY DURING THE TRACKING OF A RADIO NAVIGATION SIGNAL | 06-23-2016 |
20160187489 | SATELLITE DOPPLER RATE COMPENSATION - A telecommunications system includes a satellite receiver programmed to estimate a Doppler frequency associated with a satellite signal. Estimating the Doppler frequency includes sampling the satellite signal, resampling the sampled satellite signal, and compensating for a frequency offset associated with the satellite signal. An example satellite receiver includes a sampling device programmed to sample the satellite signal, a resampling device programmed to sample the sampled satellite signal and output a resampled satellite signal, and an incremental phase modulator programmed to filter a frequency offset from the resampled satellite signal. | 06-30-2016 |
20160252886 | Satellite Signal Receiving Device, Method of Controlling Satellite Signal Receiving Device, and Electronic Device | 09-01-2016 |