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| Number | Title | Issue Date |
| 8072371 | Multiple-mode location determining methods and systems Methods, apparatuses and/or systems are provided for selectively initiating a first mode location determination process using a location determining device if an item is not substantially stationary, and selectively initiating at least a second mode location determi... | 12/06/2011 |
| 7961141 | Methods and systems to increase accuracy in the navigation of single frequency receivers In a method of mitigating errors in satellite navigation measurements at a satellite navigation receiver, respective single-frequency signals are received from respective satellites in a plurality of satellites in a satellite navigation system. Pseudorange and carri... | 06/14/2011 |
| 7940209 | Pseudorange calculation method, position calculation method, computer-readable recording medium, and position calculation device A pseudorange calculation method for calculating a pseudorange in a position calculation device includes: passing a received signal received from a satellite for position calculation through a first filter; passing the received signal through a second filter having ... | 05/10/2011 |
| 7916077 | Method for obtaining correct phase inversion points in signal of GPS A method for obtaining correct phase inversion points in a signal of global positioning system (GPS) includes the following steps. A satellite signal from one of a plurality of satellites is received continuously. A plurality of phase inversion points in the receive... | 03/29/2011 |
| 7911377 | Method for obtaining precise tracking frequency of GPS signal A method for obtaining a precise tracking frequency of a global positioning system (GPS) signal is described, which includes the following steps. A plurality of data from a satellite is continuously received. Each data has a tracking frequency. A plurality of phase ... | 03/22/2011 |
| 7868819 | Arrangements for satellite-based navigation and methods therefor Various systems, methods and devices are implemented for processing received signals. Consistent with one such embodiment, a method is implemented for use in a signal-communication receiver having a carrier-tracking loop and a processor for operating adaptive algori... | 01/11/2011 |
| 7830303 | Coherent integration enhancement method, positioning method, storage medium, coherent integration enhancement circuit, positioning circuit, and electronic instrument Integrated correlation values (I and Q integrated correlation values) between each of I and Q signals obtained from a received signal and a code replica are calculated by a coherent integration process performed by a correlation process circuit section 32. A ... | 11/09/2010 |
| 7817084 | System and/or method for reducing ambiguities in received SPS signals Systems, apparatuses, and/or methods for resolving ambiguities associated with signals received from space vehicles (SVs) in a satellite navigation system. For example, certain methods include receiving a first SV signal from a first satellite positioning system (SP... | 10/19/2010 |
| 7791534 | GNSS time fraction calibration of a real time clock A generic navigation satellite system (GNSS) signal receiver having a fast time to first fix by calibrating a low power always-on real time clock (RTC). The receiver includes an RTC calibrator having a fraction calculator. The RTC calibrator may also include a time ... | 09/07/2010 |
| 7786933 | Digital beam-forming apparatus and technique for a multi-beam global positioning system (GPS) receiver An advanced multiple-beam GPS receiving system is achieved that is capable of simultaneously tracking multiple GPS satellites independently, detecting multiple interference signals individually, and suppressing directional gain in the antenna pattern of each beam in... | 08/31/2010 |
| 7786932 | Time-to-first-fix for position determination An improved time-to-first-fix (TTFF) for GPS systems is provided through a comparison of the time-of-week (TOW) to the sub-frame identification (ID). In one embodiment, this comparison comprises dividing the TOW to form a ratio and performing a modulus operation on ... | 08/31/2010 |
| 7777673 | Positioning method, positioning device, and program A positioning method includes: executing a first positioning mode or a second positioning mode, a first positioning process that is performed using a least-square method based on a positioning signal and a second positioning process that is performed using a Kalman ... | 08/17/2010 |
| 7764226 | Universal digital channel for receiving signals of global navigation satellite systems Disclosed is a system and method for processing signals received from different global navigation satellite systems. The receiver includes a number of universal digital channels. The universal digital channel can be used to receive and process different code signals... | 07/27/2010 |
| 7760138 | GNSS receiver with enhanced accuracy using two signal carriers A satellite positioning receiver is disclosed having at least one receive channel. Each receive channel is intended to perform a combined processing of a first S1 and a second S2 radiofrequency signals separated in frequency. The signals are received b... | 07/20/2010 |
| 7755542 | GNSS signal processing methods and apparatus Methods and apparatus for processing of data from a network of GNSS reference stations are presented. An ionosphere-free, federated geometry filter is employed so that computation time increases only linearly with the increase in number of reference stations, signif... | 07/13/2010 |
| 7750846 | Receiver for radio positioning signals A GPS or Galileo receiver for radio positioning signals wherein at least a part of the computing of position related data based on radio signals received from a plurality of space vehicles is carried out by a processor (21) mounted on a graphic or sound card ... | 07/06/2010 |
| 7746274 | Global positioning receiver with PN code output A local ranging system for use with GPS receivers and GPS enabled devices. A device in accordance with the present invention comprises a Radio Frequency (RF) section, the RF section adaptable to receive at least one GPS signal from at least one GPS satellite, and a ... | 06/29/2010 |
| 7737889 | Method and apparatus for processing global navigation satellite system signals Disclosed is a receiver that receives at least three satellite signals and determines the contribution of dispersive elements, nondispersive elements, and phase windup to a phase difference between each received satellite signal and a corresponding generated signal.... | 06/15/2010 |
| 7733269 | Positioning apparatus and positioning system A mobile station (1) gets the carrier phase integration values and the code pseudorange which is based on the satellites' data transmitted from the satellites (SAT1-SATn). The mobile station (1) gets the data including the delay data of the iono... | 06/08/2010 |
| 7719466 | Communications systems that reduces auto-correlation or cross-correlation in weak signals The present invention discloses methods, apparatuses, and systems for eliminating auto- and cross-correlation in weak signal CDMA systems, such as GPS systems. The invention uses parallel data paths that allow standard correlation of signals in parallel with verific... | 05/18/2010 |
| 7705777 | Mobile multifrequency transmitter transmitting on frequencies based on geographic locations and a method thereof A mobile multifrequency transmitter includes a self-locator, a frequency selector, and a communication unit. The self-locator is configured to determine a current self location without transmitting an outgoing signal, and to provide the self location to the multifre... | 04/27/2010 |
| 7696925 | Memory reduction in GNSS receiver Radiolocalization receiver with a massively parallel array of correlators, comprising a data compression module (199) to compress the incoherent integration values accumulated into the incoherent integration memories (176). By compressing incoherent in... | 04/13/2010 |
| 7688262 | Method of cross-correlation and continuous wave interference suppression for GPS signal and associated GPS receiver A method for processing weak indoor signals in presence of cross-correlation or continuous wave interference and associated GPS receiver are provided. The method comprises providing a two-dimensional delay-Doppler accumulated power pattern having a plurality of accu... | 03/30/2010 |
| 7688261 | Global position system (GPS) user receiver and geometric surface processing for all-in-view coherent GPS signal PRN codes acquisition and navigation solution A method and system for enabling a more robust detection, acquisition and positioning solution capability for a GPS device. The system and method uses GPS satellite ranging signals based on a simultaneous, all-in-view coherent PRN code signal processing scheme, rath... | 03/30/2010 |
| 7683832 | Method for fusing multiple GPS measurement types into a weighted least squares solution A method of calculating position data for an airborne aircraft using a GPS-based airborne navigation system includes the processing of a position component of a relative state function by fusing a plurality of different types of measurement data available in the GPS... | 03/23/2010 |
| 7679557 | Method and system for multi-function satellite positioning system receivers Multifunction satellite positioning receiver having a plurality of functions that are selectable in response to predetermined events or in response to user actions and enable more efficient use of the hardware and processing resources of a multifunction satellite po... | 03/16/2010 |
| 7667644 | GPS receiver RAIM with slaved precision clock A method and a system for providing a substituted timing signal for a missing satellite ephemeris in execution of a RAIM algorithm includes deriving a plurality of position, velocity, and time solutions from a GPS navigation system. The position, velocity and time s... | 02/23/2010 |
| 7649494 | GPS receiver A GPS receiver which performs correlation processing by using replicas of C/A codes generated in the GPS receiver after a GPS signal received from a GPS satellite is subjected to accumulating processing, wherein in the accumulating processing, a plurality of signals... | 01/19/2010 |
| 7642959 | Method and apparatus for processing satellite signals at a satellite positioning system receiver Method and apparatus for processing satellite signals in an SPS receiver is described. In one example, the satellite signals are correlated against pseudorandom reference codes to produce correlation results. A determination is made whether the SPS receiver is in a ... | 01/05/2010 |
| 7639181 | Method and device for tracking weak global navigation satellite system (GNSS) signals A Global Navigation Satellite System (GNSS) receiver and associated method capable of tracking weak GNSS signals from a plurality of GNSS satellites. In a preferred embodiment, code and carrier tracking loops are initially closed around the code phase, carrier frequ... | 12/29/2009 |
| 7639180 | Dynamic memory allocation and sharing in electronic systems A method and system for dynamic memory allocation and sharing in electronic systems. Embodiments include multi-channel signal processing, including continuously receiving multiple channels, wherein each channel comprises a discrete signal, and processing the multipl... | 12/29/2009 |
| 7633439 | Method and system for processing positioning signals based on predetermined message data segment A method and system for determining a geolocation of an object includes collecting a positioning signal including a predetermined message data segment. A time of arrival of the predetermined message data segment may be determined in the positioning signal. Informati... | 12/15/2009 |
| 7629925 | Positioning apparatus A positioning apparatus and a point positioning method which estimated with high accuracy with only one linear regression equation is provided. The positioning apparatus (10) includes the two GPS receivers (1A), (1B) which connect to the GPS ant... | 12/08/2009 |
| 7626542 | Mitigating interference in a signal A method and receiver are disclosed for mitigating or substantially canceling signal interference between signals detected at the receiver. Once a presumed interfering signal(s) is acquired, parameters are determined that allow the interferer(s) to be modeled. The p... | 12/01/2009 |
| 7623067 | Fast search GPS receiver A system within a multi-channel GPS receiver that searches for Global Positioning System (GPS) satellites by receipt of a plurality of GPS signals where each GPS signal corresponds to a GPS satellite having a GPS satellite identification number (ID) is shown. The sy... | 11/24/2009 |
| 7623068 | Detection of deception signal used to deceive geolocation receiver of a satellite navigation system A method for detecting the presence of a deception signal associated with a satellite navigation system. The deception signal has certain “observables”, which can be used by a GPS receiver to detect the presence of the deception signal. ... | 11/24/2009 |
| 7623069 | Present position locating method An evaluation point E of a present position candidate corresponding to each satellite set is calculated based on an a priori residual (APR) (APR value), a PDOP value, and the number of satellites of the target satellite set according to E=k1·f1(APR)+k... | 11/24/2009 |
| 7619560 | GPS processing arrangement A software GPS processing arrangement comprising a FIFO buffer for receiving a stream of the GPS signal samples, a memory, a DMA controller for transferring the GPS signal samples from the FIFO buffer to the memory, a CPU running GPS signal processing software confi... | 11/17/2009 |
| 7612713 | First output position calculation method, storage medium, positioning device, and electronic instrument In the first positioning, a positioning process that calculates the present position based on acquired GPS satellite signals (step A3) is performed a plurality of times. A number of times that the difference (position difference) ΔP between the calculated pr... | 11/03/2009 |
| 7609204 | System and method for dynamically estimating output variances for carrier-smoothing filters An improved system and method is disclosed for dynamically estimating the output variances of carrier-smoothing filters used, for example, in GPS receivers. By accurately estimating the output variances of the carrier-smoothing filters as they transition from initia... | 10/27/2009 |
