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| Number | Title | Issue Date |
| 7528771 | Method and system for GPS position measuring and frequency error detecting method A receiver terminal receives a frequency from an external reference oscillator portion, which is more accurate than that of a frequency generated within the receiver in a local oscillator portion. The frequency from the local oscillator portion is measured using the... | 05/05/2009 |
| 7466263 | GNSS receiver using stored navigation data bits A GPS receiver having a fast method for determining GPS clock time. The GPS receiver includes a signal processor for receiving GPS signals from GPS satellites and detecting current GPS data bits carried by the respective GPS signals, a chapter memory for storing a b... | 12/16/2008 |
| 7395155 | Global positioning system receiver and correlating circuit thereof A global positioning System receiver and a correlating circuit thereof are disclosed. They sequentially and in parallel generate the portion of bits of the C/A code representing the satellite, sequentially and in parallel generate the portion of bits of the correcte... | 07/01/2008 |
| 7375682 | Always-on satellite positioning receiver A method for establishing a position of a device is disclosed. The method generally includes the steps of (A) receiving an input signal from a receiver listening to a plurality of satellites in a positioning system, (B) calculating (i) a plurality of estimated Doppl... | 05/20/2008 |
| 7372400 | Methods and apparatus for a navigation system with reduced susceptibility to interference and jamming A navigation system provides a significant level of protection against all forms of interference or jamming to GPS in a cost-effective way. The system employs a network of ground reference stations and Low Earth Orbiting (LEO) satellites in conjunction with GPS. A c... | 05/13/2008 |
| 7369830 | Monolithic GPS RF front end integrated circuit A highly integrated GPS RF Front End which uses a single conversion stage employs an image rejection mixer stage to eliminate the need for an image reject RF bandpass filter. Also a relatively high sample rate A/D is employed which allows a timeless monolitic IF Fil... | 05/06/2008 |
| 7366492 | Method and system for mobile location detection using handoff information Methods and systems for mobile station location detection. A mobile station measures signal strength of each of a set of signals associated with the mobile station, then determines whether a number of signals in the set is less than a predetermined threshold. Based ... | 04/29/2008 |
| 7358894 | Key for a vehicle A vehicle comprises a base station for wireless transmission of locating support information to support locating, supported on a locating satellite, as well as a key for the vehicle, in which the key includes a locating module to determine the position of the key as... | 04/15/2008 |
| 7336223 | System and method for establishing the instantaneous speed of an object A system for establishing the speed, in a safe manner, of an object (1) which is travelling along a known trajectory, including a device (3, 7) for locating the object and direction of its movement, a receiver (6) for receiving a signal from a p... | 02/26/2008 |
| 7305928 | Method for positioning a marine vessel A vessel positioning system maneuvers a marine vessel in such a way that the vessel maintains its global position and heading in accordance with a desired position and heading selected by the operator of the marine vessel. When used in conjunction with a joystick, t... | 12/11/2007 |
| 7302267 | Apparatus and method for estimating a velocity of a mobile terminal in a mobile communication system A Base Station (BS) apparatus for estimating a velocity of a Mobile Station (MS) in a mobile communication system includes a channel estimator for performing channel estimation according to a velocity band, receiving a wireless channel signal from the MS, and perfor... | 11/27/2007 |
| 7301498 | Inserting measurements in a simplified geometric model to determine position of a device The invention relates to a method and a system for determining the position of a device (1) by taking measurements to determine the range between at least a first positioning station (2) and the device (1) and to determine the range between at l... | 11/27/2007 |
| 7302225 | Time acquisition in a wireless position determination system A system and method for providing timing information to a wireless device in a position determination system is disclosed. A wireless device includes a reference signal receiver, a signal processor, a wireless communications transceiver and a GPS receiver. The wirel... | 11/27/2007 |
| 7295156 | Cellphone GPS positioning system A mobile GPS location system. The location system includes a mobile radio transceiver for transmitting a radio positioning signal and receiving a responsive radio system signal having a radio positioning system (RPS)-based time and position derived from the radio po... | 11/13/2007 |
| 7292938 | Position locating system, terminal device, control method for terminal device, control program for terminal device, and computer readable record medium storing control program for terminal device therein A terminal device 50 includes aid-information acquisition device to acquire aid information 154 from an information providing apparatus, an information-providing-apparatus-sort judgment device to judge the type of information providing apparatus on the... | 11/06/2007 |
| 7283091 | Radio positioning system for providing position and time for assisting GPS signal acquisition in mobile unit A mobile location system. The GPS location system includes a radio positioning system (RPS) for determining times-of-arrival at several locations for a radio positioning signal transmitted from a mobile unit and then using the times-of-arrival for determining an RPS... | 10/16/2007 |
| 7269512 | Information processing apparatus and GPS positioning method An information processing apparatus is configured to measure a Doppler shift in the frequency of a radio wave from a GPS (Global Positioning System) satellite and a pseudo-distance between the satellite and a measuring point by using the signal therefrom, and calcul... | 09/11/2007 |
| 7267068 | Method for maneuvering a marine vessel in response to a manually operable control device A marine vessel is maneuvered by independently rotating first and second marine propulsion devices about their respective steering axes in response to commands received from a manually operable control device, such as a joystick. The marine propulsion devices are al... | 09/11/2007 |
| 7265668 | System and method for asset tracking and monitoring A multi-mode asset tracking and monitoring system and method is provided that enables comprehensive reporting of asset position, status, and alerts. In one embodiment, the multi-mode system and method is based on the addition of a local network monitoring system to ... | 09/04/2007 |
| 7266140 | GPS positioning method and GPS reception apparatus A GPS positioning method is disclosed which can shorten the time required until positioning arithmetic operation is started after power is made available. An oscillation frequency of a reference frequency oscillator used in a GPS receiver section or a frequency vari... | 09/04/2007 |
| 7257417 | Method for determining a change in a communication signal and using this information to improve SPS signal reception and processing Methods and apparatuses for determining a position of a mobile satellite positioning system (SPS) receiver which is coupled to a communication receiver or transceiver. In one exemplary method, a change in a communication signal received by the communication receiver... | 08/14/2007 |
| 7250904 | Navigation satellite acquisition in satellite positioning system receiver A method in a mobile satellite positioning system receiver operating in cold-start mode, including searching for and detecting (310) a first satellite in a constellation of orbiting satellites, searching (320) for a second satellite based on detection ... | 07/31/2007 |
| 7245253 | Method and apparatus for processing of satellite signals without time of day information Method and apparatus for locating position of a satellite signal receiver is described. In one example, pseudoranges are obtained that estimate the range of a satellite signal receiver to a plurality of satellites. An absolute time and a position are computed using ... | 07/17/2007 |
| 7239273 | Apparatus and method for calculating satellite acquisition information to recognize position of mobile station An apparatus for calculating satellite acquisition information for controlling a position determination entity (PDE) to determine a position of the MS in a network assisted GPS system comprising an MS containing a GPS receiver and the PDE containing a reference stat... | 07/03/2007 |
| 7236883 | Aiding in a satellite positioning system The invention relates to an aided Global Positioning System (GPS) subsystem within a wireless device. The wireless device includes a wireless processing section capable of receiving signals from a wireless network and a GPS subsystem having a radio frequency (RF) fr... | 06/26/2007 |
| 7233795 | Location based communications system A location based communications system uses a physical location system (PLS) or relative position system to determine a communication unit's location in two or three dimensions, and is configured for radiotelephonic calls through intermediary communications satellit... | 06/19/2007 |
| 7200414 | Client-aiding with cellphones in a 150-KM radius area A cellphone system comprises a GPS reference station located with a telephone cell site. Such GPS reference station tracks the GPS satellites visible to its local area and estimates the Doppler for each such GPS satellite. The system also includes mobile GPS receive... | 04/03/2007 |
| 7196660 | Method and system for determining time in a satellite positioning system Method and apparatus for receiving an estimate of time in a satellite signal receiver receives an estimate of time from a server and compensates for error of a clock in the satellite signal receiver using the estimate of time. The output of the compensated clock is ... | 03/27/2007 |
| 7197305 | Apparatus for reducing auto-correlation or cross-correlation in weak CDMA 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... | 03/27/2007 |
| 7154437 | 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... | 12/26/2006 |
| 7145507 | Vehicle locating system using GPS A vehicle locating system for directing a user to a remotely-located vehicle comprises a vehicle-mounted location unit and a personal fob. The vehicle-mounted location unit includes a first global positioning receiver for receiving satellite location signals which o... | 12/05/2006 |
| 7142589 | Global positioning system code phase detector with multipath compensation and method for reducing multipath components associated with a received signal A method for compensating for multipath components in a received CDMA signal comprising a repetitive PRN code uses delay times in addition to the early, late and prompt delay times for determining if a multipath component is present in the received signal, and if so... | 11/28/2006 |
| 7139567 | Tone based command system for reception of very weak signals This disclosure presents a communication receiver system for spacecraft that includes an open loop receiver adapted to receive a communication signal. An ultrastable oscillator (USO) and a tone detector are connected to the open loop receiver. The open loop receiver... | 11/21/2006 |
| 7136015 | Method and apparatus for satellite positioning When there is a large difference greater than a threshold value between a position determined at a time in satellite positioning by a GPS receiver based on a propagation delay of signals received from a GPS satellite, and an anterior position determined at an anteri... | 11/14/2006 |
| 7133772 | Method and apparatus for navigation using instantaneous Doppler measurements from satellites A method and apparatus for locating position of a satellite signal receiver is described. In one example, a Doppler offset for each of a plurality of satellite signals relative to the satellite signal receiver is determined at a first time. A position of the satelli... | 11/07/2006 |
| 7129839 | Device for monitoring an area The present invention relates to a monitoring device (1) with a transmitter unit (2) and a receiver unit (3) for monitoring an area. Slotted cables serve as antennas. According to the invention, a first slotted cable is arranged as a transmittin... | 10/31/2006 |
| 7109920 | Moving platform position determination system and method A system and method for determining a position of a moving platform are provided. The method includes transmitting a carrier signal from one of the moving platform and a stationary platform, receiving a received signal at the other of the moving and stationary platf... | 09/19/2006 |
| 7110442 | Method and apparatus for fast acquisition and low SNR tracking in satellite positioning system receivers A satellite positioning system (SATPS) receiver has a mix of standard and enhanced digital channel processors. The standard digital channel processors perform continuous tracking. During a low SNR and/or fast acquisition mode, the enhanced digital channel processor ... | 09/19/2006 |
| 7102567 | System and method for estimating clock acceleration and location determination A method and a system for a location determination (a) acquire a first positioning signal; (b) analyze the first positioning signal to provide an estimate of a clock signal acceleration; (c) acquire additional positioning signals based on the estimate of the clock s... | 09/05/2006 |
| 7082155 | Reception level measuring system A reception level measuring system in which a base station in a code division multiple access (CDMA) mobile communication system measures a reception level of a signal from a mobile station. The reception level measuring system has an approximate-line estimating dev... | 07/25/2006 |
