| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 342357730 | Multimode operation in different systems which transmit time-stamped messages; e.g., GPS/GLONASS (IPC) | 26 |
| 20100302100 | Signal Processing Apparatus for Multi-mode Satellite Positioning System and Method Thereof - A signal processing apparatus for a multi-mode satellite positioning system includes a band-pass filter, a local oscillator circuit, a first mixing circuit, a second mixing circuit, an analog-to-digital converter and a baseband circuit. By properly allocating a local frequency, radio frequency (RF) signals of a Global Positioning System (GPS), a Galileo positioning system and a Global Navigation System (GLONASS) are processed via a single signal path to save hardware cost. | 12-02-2010 |
| 20110025559 | METHOD AND APPARATUS FOR USING GPS SATELLITE STATE COMPUTATIONS IN GLONASS MEASUREMENT PROCESSING - The present invention is related to location positioning systems, and more particularly, to a method and apparatus for using satellite state information from two or more different satellite systems in navigation processing. According to one aspect, it makes use of GPS extended ephemeris functionality to produce satellite state vector estimates for GLONASS satellites. These satellite state vector estimates can be used alone or in combination with GPS satellite vectors to provide updates to the receiver's navigation processing. According to further aspects, the GLONASS satellite position and trajectory information is extrapolated with a GPS gravity model rather than the GLONASS model, thereby allowing it to be extrapolated more accurately and for longer periods of time than the GLONASS model allows. | 02-03-2011 |
| 20110080322 | METHOD AND SYSTEM FOR CALIBRATING GROUP DELAY ERRORS IN A COMBINED GPS AND GLONASS RECEIVER - A combined GPS and GLONASS receiver receives GPS signals and GLONASS signals. A calibration signal is generated utilizing the received GPS signals and/or the received GLONASS signals to offset group delay errors in the received GLONASS signals. The generated calibration signal is filtered through Kalman filters to estimate group delay variations in the received GLONASS signals. The estimated group error delay variations are combined with the received GLONASS signals to calibrate the received GLONASS signals by offsetting the estimated group error delay variations. When GPS signals are not available for use, the combined GPS and GLONASS receiver obtains group delay errors stored or in the received GLONASS signals to estimate calibration coefficients. The estimate calibration coefficients are updated utilizing received GPS and/or GLONASS signals. The updated estimated calibration coefficients are stored before turning off the combined GPS and GLONASS receiver to expedite calibrating of GLONASS signals received upon turning on. | 04-07-2011 |
| 20110102260 | METHODS AND APPARATUSES USING MIXED NAVIGATION SYSTEM CONSTELLATION SOURCES FOR TIME SETTING - 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 using portions of system time identifiers from different systems to determine at least one navigation system time. | 05-05-2011 |
| 20110181467 | Analog Front End For System Simultaneously Receiving GPS and GLONASS Signals - A receiver for receiving both GPS signals and GLONASS signals is provided. This receiver includes an analog front end (AFE), a GPS digital front end (DFE) and a GLONASS DFE for receiving an output of the AFE, and a dual mode interface (DMI) for receiving outputs of the GPS and GLONASS DFEs. Search engines are provided for receiving outputs of the DMI. Notably, certain front-end components of the AFE are configured to process both the GPS signals and the GLONASS signals. | 07-28-2011 |
| 20110181468 | Digital Front End In System Simultaneously Receiving GPS And GLONASS Signals - A receiver for receiving both GPS signals and GLONASS signals is provided. This receiver includes an analog front end (AFE), a GPS digital front end (DFE) and a GLONASS DFE for receiving an output of the AFE, and a dual mode interface (DMI) for receiving outputs of the GPS and GLONASS DFEs. Search engines are provided for receiving outputs of the DMI. Notably, certain front-end components of the AFE are configured to process both the GPS signals and the GLONASS signals. | 07-28-2011 |
| 20110193744 | METHOD AND SYSTEM FOR INTEGRATED GLONASS AND GPS PROCESSING - An integrated global navigation satellite system (GNSS) receiver may be operable to decompose GNSS IF signals associated with GPS satellites and/or GLONASS satellites into a constituent narrowband GPS data stream and/or a plurality of constituent narrowband GLONASS data streams utilizing, for example, a GPS IF tuner and/or one or more GLONASS IF tuners. The narrowband GLONASS data streams and/or the narrowband GPS data stream may be processed at reduced sampling rates utilizing a shared sample memory in the integrated GNSS receiver. The narrowband GLONASS data streams and/or the narrowband GPS data stream may be stored in allocated sections of the shared sample memory. The stored narrowband GLONASS data streams and/or the stored narrowband GPS data stream may be processed using a correlation such as a fast Fourier transform (FFT) correlation. | 08-11-2011 |
| 20110205114 | SYSTEMS AND METHODS FOR DETECTING MULTIPLE GNSS SIGNALS - A representative radio frequency (RF) receiver comprises an RF section that receives RF signals. Such RF signals include more than one global navigation satellite system (GNSS) signals, which include at least one of the following: global positioning system (GPS) signals, Galileo signals and Glonass signals. A mixer and converter section receives the RF signals from the RF section and includes a band stop filter and a harmonic reject mixer that facilitate detecting more than one GNSS signals from the RF signals. An intermediate frequency section amplifies and selects the detected more than one GNSS signals. | 08-25-2011 |
| 20120007777 | Hybrid Satellite Positioning Receiver - A hybrid satellite positioning receiver architecture is provided with a first receive path and a second receive path. The first receive path downconverts received satellite positioning signals of a first type to an intermediate frequency range, and the second receive path downconverts received satellite positioning signals of a second type to the same intermediate frequency range. | 01-12-2012 |
| 20120026039 | SINGLE RF RECEIVER CHAIN ARCHITECTURE FOR GPS, GALILEO AND GLONASS NAVIGATION SYSTEMS, AND OTHER CIRCUITS, SYSTEMS AND PROCESSES - A wireless receiver for multiple frequency bands reception includes a single receive radio frequency (RF) circuit ( | 02-02-2012 |
| 20120032846 | NAVIGATION RECEIVER - The subject matter disclosed herein relates to a system and method for processing navigation signals received from multiple global navigation satellite systems (GNSS′). In a particular implementation, signals received from multiple GNSS′ may be processed in a single receiver channel. | 02-09-2012 |
| 20130106655 | Method, Device And Network For Authenticating The Position Of A Navigation Receiver | 05-02-2013 |
| 20130229306 | SINGLE RF RECEIVER CHAIN ARCHITECTURE FOR GPS, GALILEO AND GLONASS NAVIGATION SYSTEMS, AND OTHER CIRCUITS, SYSTEMS AND PROCESSES - A wireless receiver for multiple frequency bands reception includes a single receive radio frequency (RF) circuit ( | 09-05-2013 |
| 20130307724 | Apparatus And Method For Generating GPS Time - Disclosed therein is an apparatus for generating a GPS (Global Positioning System) time that includes: a storing portion for storing a first GPS time corresponding to a 1PPS (Pulse Per Second) signal generated from a GPS receiver for synchronization with an INS (Inertial Navigation System); and a GPS time calculating portion for, upon reception of the 1PPS signal from the GPS receiver, adding a previous first GPS time stored in the storing portion and a period of the 1PPS signal to compute a second GPS time, and storing the first GPS time corresponding to the received 1PPS signal in the storing portion, thereby generating an accurate GPS time at a generation point of the 1PPS signal. | 11-21-2013 |
| 20130328719 | ANTI-SPOOFING DETECTION SYSTEM - Spoofing of a satellite positioning system is detected by receiving position location data from multiple sources. The received data is compared and inconsistent data is marked. A position location is estimated based on the received position location data, while accounting for the marked inconsistent data. | 12-12-2013 |
| 20140028499 | Engines In System Simultaneously Receiving GPS And GLONASS Signals - A receiver for receiving both GPS signals and GLONASS signals is provided. This receiver includes an analog front end (AFE), a GPS digital front end (DFE) and a GLONASS DFE for receiving an output of the AFE, and a dual mode interface (DMI) for receiving outputs of the GPS and GLONASS DFEs. Search engines are provided for receiving outputs of the DMI. Notably, certain front-end components of the AFE are configured to process both the GPS signals and the GLONASS signals. | 01-30-2014 |
| 20140062782 | Method and System for Calibrating Group Delay Errors in a Combined GPS and GLONASS Receiver - A combined GPS and GLONASS receiver receives GPS signals and GLONASS signals. A calibration signal is generated utilizing the received GPS signals and/or the received GLONASS signals to offset group delay errors in the received GLONASS signals. The generated calibration signal is filtered through Kalman filters to estimate group delay variations in the received GLONASS signals. The estimated group error delay variations are combined with the received GLONASS signals to calibrate the received GLONASS signals by offsetting the estimated group error delay variations. When GPS signals are not available for use, the combined GPS and GLONASS receiver obtains group delay errors stored or in the received GLONASS signals to estimate calibration coefficients. The estimate calibration coefficients are updated utilizing received GPS and/or GLONASS signals. The updated estimated calibration coefficients are stored before turning off the combined GPS and GLONASS receiver to expedite calibrating of GLONASS signals received upon turning on. | 03-06-2014 |
| 20140062783 | RECEIVING POSITIONING SIGNALS AT DIFFERENT FREQUENCIES - A method and a receiver for receiving positioning signals are disclosed. The positioning signals are received from a plurality of first sources in a first frequency range and from a plurality of second sources in a second frequency range different from the first frequency range. The receiver is switched between the first and second frequency ranges to receive the positioning signals, and the receiver obtains time offset information about a time taken to switch the receiver between the first and second frequency ranges, by obtaining a solution to a set of simultaneous equations based on combined navigation data for the first and second sources. | 03-06-2014 |
| 20140091967 | Seismic Data Acquisition Module with Broadband Antenna, and Corresponding Systems, Devices, Components and Methods - Described herein are various embodiments of methods and corresponding hardware and software that are configured to permit a seismic data acquisition module to switch between GNSS systems according to which system at a given time is determined to provide the best signal characteristics for acquiring accurate positional and timing data regarding the precise geographic location of the seismic data acquisition module when it is deployed in the field, and the corresponding times at which seismic data are acquired and recorded thereby. | 04-03-2014 |
| 20140266886 | CONCURRENT MULTI-SYSTEM SATELLITE NAVIGATION RECEIVER WITH REAL SIGNALING OUTPUT - A global navigation satellite system (GNSS) receiver includes at least one GNSS antenna configured to receive input signaling from at least a first GNSS source and a second GNSS source; an in-phase/quadrature (I/Q) mixer coupled to the at least one GNSS antenna and configured to process the input signaling to obtain complex intermediate signaling; a first complex filter coupled to the I/Q mixer and configured to filter the complex intermediate signaling with respect to a first frequency range to obtain first real output signaling; a second complex filter coupled to the I/Q mixer and configured to filter the complex intermediate signaling with respect to a second frequency range to obtain second real output signaling; and a signal combiner coupled to the first and second complex filters and configured to generate combined real output signaling by combining the first real output signaling and the second real output signaling. | 09-18-2014 |
| 20150054686 | SYSTEM, METHOD, AND APPARATUS FOR COMPENSATING FOR IONOSPHERIC DELAY IN A MULTI CONSTELLATION SINGLE RADIO FREQUENCY PATH GNSS RECEIVER - Systems, methods, and apparatuses are provided for compensating for ionospheric delay in multi constellation Global Navigation Satellite Systems (GNSSs). In one method, a single Radio Frequency (RF) path receiver receives a first signal at a first frequency from a first satellite in a first GNSS constellation, receives a second signal at a second frequency from a second satellite in a second GNSS constellation, and calculates the ionospheric delay using the received first signal and the received second signal. | 02-26-2015 |
| 20150311598 | EXPANDING AXIAL RATIO BANDWIDTH FOR VERY LOW ELEVATIONS - Systems and methods for expanding the axial ratio bandwidth at very low elevations are provided. In certain implementations, a system comprises an antenna having a first group of antenna elements and a second group of antenna elements, wherein elements in the first group of antenna elements are reflectively symmetrical about a plane with corresponding elements in the second group of antenna elements; and a global navigation satellite system receiver configured to drive the antenna and process received signals from global navigation satellite system satellites, wherein the global navigation satellite system receiver operates elements in the first group of antenna elements with a first phase delay and the second group of antenna elements with a second, different phase delay and drives the first group of antenna elements and the second group of antenna elements at different power levels. | 10-29-2015 |
| 20160054450 | GNSS RECEIVER - A method for use with a Global Navigation Satellite System (GNSS) receiver is provided. The method includes obtaining a first system time from a satellite of a first satellite navigation system, obtaining a second system time from a satellite of a second satellite navigation system, calculating a difference between the first system time and the second system time to obtain a number of leap seconds between Coordinated Universal Time (UTC) and the second satellite system. | 02-25-2016 |
| 20160097860 | METHOD AND DEVICE FOR DETERMINING AT LEAST ONE DATE WITH THE AID OF SATELLITE-BASED POSITIONING AND DATE-STAMPING SYSTEMS - A device comprising a reception unit for automatically receiving two radiofrequency signals originating from different satellite-based positioning and date-stamping systems, a data processing unit for automatically processing each of the radiofrequency signals so as to deduce time data therefrom, each time datum comprising at least one number of weeks, a calculation unit for automatically calculating a UTC date which is compatible with these time data, and a data transmission unit for automatically providing this UTC date to at least one user system. | 04-07-2016 |
| 20160103225 | RECEIVER FOR RECEIVING A PLURALITY OF GNSS (GLOBAL NAVIGATION SATELLITE SYSTEM) SIGNALS - A receiver is arranged to receive a plurality of Global Navigation Satellite System (GNSS) signals from up to four different satellite navigation systems including a GLONASS system, a BeiDou system, a GPS system, and a Galileo system. Received GNSS signals are mixed with a first local frequency signal to generate a plurality of mixed signals. The mixed signals are processed in up to three parallel branches. In a first branch, a first portion of the mixed signals are transformed by passing the first portion through a band-pass filter having a bandwidth between about 0 MHz and 46 MHz and by amplifying the filtered signals with an AGC circuit. In a second branch, a second portion of the mixed signals are transformed by rejecting image signals of the second portion with an image rejection filter and mixing image rejection filter output signals with a second local frequency signal to derive first remixed signals. In a third branch, a third portion of the mixed signals are transformed by adjusting a phase of the third portion to overlap a band of the first remixed signals. The adjusted third portion of the mixed signals and the first remixed signals are concurrently band pass filtered with a low IF filter. | 04-14-2016 |
| 20160154114 | Method and System for Integrated GLONASS and GPS Processing | 06-02-2016 |
