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| Number | Title | Issue Date |
| 8169369 | Method and device for generating a location signal A frequency generation unit (FGU) in a communication device includes a voltage controlled oscillator (VCO), an adjustable filter having a capacitive element for wideband operation, a current source with variable gain, and chirp generation control circuitry (CGC) tha... | 05/01/2012 |
| 8144056 | Directional beacon device A beacon device includes a control circuitry, a window, and a plurality of sets of illumination sources. The window includes a prismatic structure forming a ring from a planar perspective. The prismatic structure defines an inside surface and an outside surface from... | 03/27/2012 |
| 8125387 | Regional satellite positioning supplementary system Systems and methods for a navigation satellite of a satellite positioning supplementary system are provided in which a unit generates a navigation signal with a signal strength being dimensioned in such a way that it is still possible to receive signals of other sat... | 02/28/2012 |
| 8089405 | Applications for geographically coded access points Applications and uses for geographic coded of network access points includes a method for generating a geographic code and an associated graphical user-interface; a method for rejecting or filtering out geographic codes of inaccurately labeled access points; a metho... | 01/03/2012 |
| 8072381 | Location determination in a wireless network A method for improving location determination for a mobile device location of which precludes it from sufficiently accurate determination by a standard position determination mechanism is disclosed. The method includes a step of receiving, at a server and from a mob... | 12/06/2011 |
| 8063823 | Method for generating a location signal A communication device uses its FGU to generate a location signal that can be used by a reference device to calibrate the communication device and to determine the distance of the communication device from the reference device. The communication device: receives, fr... | 11/22/2011 |
| 8044858 | Regional navigation satellite supplementary system A device of a supplementary navigation satellite is provided. The device includes a unit for generating navigation signals, the signal strength of the navigation signals being dimensioned in such a way that it is still possible to receive signals of other satellite ... | 10/25/2011 |
| 8018382 | Positioning system and method A positioning system designed to provide a three dimensional location of an object. The system can include one or more multiple transmitters or electromagnetic beacons, software defined radio receivers with an associated processing unit and data acquisition system, ... | 09/13/2011 |
| 7994981 | System framework for mobile device location A method for estimating the location of a beacon from an ensemble of measurements associated with said beacon, where, contained in each measurement, are GPS data from which surfaces of location may be extracted, together with the ID's of beacons detectable at the po... | 08/09/2011 |
| 7948437 | Positional information providing system, positional information providing apparatus and transmitter Positional information is provided at a place out of reach of radio wave. The process executed by a positional information providing apparatus includes the steps of: obtaining a received positioning signal; specifying an emission source of the positioning signal; ob... | 05/24/2011 |
| 7847730 | Software defined navigation signal generator A navigation signal generator on a framework that provides a standardized object-oriented means for developing and managing signal processing functions. The framework provides the ability to dynamically reallocate functions allowing numerous communications, signals ... | 12/07/2010 |
| 7808432 | Systems and methods for a high-precision time of arrival ultra-wideband positioning system Systems and methods for a high-precision time of arrival ultra-wideband positioning system are provided. In one embodiment, a method for generating precision localizer messages for an ultra-wideband time-of-arrival positioning system is provided. The method comprise... | 10/05/2010 |
| 7724190 | Signaling method and apparatus using radial interplex Embodiments of the disclosure provide methods, apparatus, and articles related to code combination for GPS III, and more particularly, to methods and apparatuses for enabling signal modulation that potentially may minimize power throw away for target code power rati... | 05/25/2010 |
| 7714784 | Base station and mobile terminal for location detection, and location detecting method Disclosed are a base station and a mobile terminal for location detection, and a location detecting method. The base station in which a plurality of antennas having RF modules are installed transmits a signal including location information of each of the antennas to... | 05/11/2010 |
| 7652625 | System and method for the mitigation of multipath and the improvement of signal-to-noise ratios in time division multiple access(TDMA) location networks A positioning system that includes a plurality of chronologically synchronized Time Division Multiple Access (TDMA) Positioning-Unit Devices and a position receiver incorporating a TDMA Adaptive Directional Antenna Array is disclosed. The plurality of chronologicall... | 01/26/2010 |
| 7626544 | Robust low-frequency spread-spectrum navigation system Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each ... | 12/01/2009 |
| 7589671 | GPS node locator using an intermediate node location for determining location of a remote node A network-aided GNSS node locator for receiving GNSS signal samples. A GNSS positioning system may include a GNSS remote node for sampling a GNSS signal and transmitting the GNSS signal samples through a communication network having an intermediate node. The GNSS no... | 09/15/2009 |
| 7576692 | Method for positioning, a positioning system, and an electronic device A method for positioning a wireless communication device includes storing position data relating to one or a plurality of reference areas to at least one data base. It is examined which of said reference areas is located in the vicinity of the wireless communication... | 08/18/2009 |
| 7570212 | Reference beacon methods and apparatus for TDOA/FDOA geolocation A method and apparatus for estimating bias errors in a time-difference-of-arrival/frequency-difference-of-arrival (TDOA/FDOA) geolocation system using a reference signal transmitter in which position and/or motion information of the reference signal transmitter is e... | 08/04/2009 |
| 7436356 | 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... | 10/14/2008 |
| 7411548 | Reference beacon identification using transmission sequence characteristics A method and apparatus for encoding information in a reference beacon signal for use in a time-difference-of-arrival/frequency-difference-of-arrival (TDOA/FDOA) geolocation system. Information is encoded in the reference beacon signal using variations in the times a... | 08/12/2008 |
| 7382317 | Two-stage location system Systems and methods are provided for two-stage location. In one implementation, there is provided a method for receiving a first location of a first radio, the first radio providing the first location of the first radio; using the received first location to determin... | 06/03/2008 |
| 7365678 | Determining usability of a navigation augmentation system In one aspect, the invention is the system for assessing a navigation augmentation environment. The system includes a reference station for receiving messages from a satellite. The reference station has a known position. The system also includes a simulator for simu... | 04/29/2008 |
| 7358897 | Apparatus, methods and computer program products for GPS signal acquisition using an adaptive search engine A GPS receiver includes a digital signal processor (DSP) configured to receive a carrier-modulated signal and to provide an adaptive GPS search engine operative to search the carrier-modulated signal for GPS signals over a variable number of carrier timing hypothese... | 04/15/2008 |
| 7340277 | Adaptive antenna for controlling the weighting on a plurality of antenna elements An optical subscriber system according to the present invention has an adaptive antenna having a plurality of antenna elements, for controlling the weighting on the antenna elements thereby to radiate beams that are adapted to radio wave environments, a position est... | 03/04/2008 |
| 7331887 | Game finder A game finder which facilitates finding of an arrow after it is shot is disclosed. The game finder includes an arrow and at least one transmitting module provided on the arrow for emitting a recovery signal when the arrow strikes game or a target. ... | 02/19/2008 |
| 7321331 | Method and apparatus for transmitting location data within an ad-hoc communication system To reduce interference and increase battery life, a method and apparatus for transmitting location data within an ad-hoc communication system is provided herein. During operation, a portion of a beacon payload is reserved to broadcast location information (coordinat... | 01/22/2008 |
| 7310064 | Rebroadcasting method and system for navigation signals A “synchrolite” or rebroadcasting device allows GPS or GNSS navigation signals received at one or several locations to be processed at a separate location. The signals received by the synchrolite are added to a pilot tone and then encoded with a superimposed spr... | 12/18/2007 |
| 7307666 | Transmitter identification system The invention relates to a transmitter identification system, which utilizes an identification signal embedded into a digital television signal, enabling the transmitter of origin to be identified at a receiving station. Ideally the identification signal is an ortho... | 12/11/2007 |
| 7301992 | Multipath processing for GPS receivers A GPS receiver system determines the presence of trackable signals at code delays less than the prompt delay being tracked for a particular, signal and changes the prompt delay to correspond to the smallest code delay having a trackable signal. Trackable signals at ... | 11/27/2007 |
| 7295633 | Triple multiplexing spread spectrum receiver A GPS car navigation system derives GPS position update information from motion of the car along the actual track. Turns along the track are detected when they actually occur and are compared with the predicted turns so that the time and position at the actual turn ... | 11/13/2007 |
| 7292188 | Apparatus and method for CDMA time pseudolite for repeater identification Apparatus and method for resolving repeater location ambiguities in a CDMA network using a CDMA Time Pseudolite. The CDMA Time Pseudolite includes a CDMA receiver to receive a CDMA signal with an embedded CDMA timing, a baseband processor to extract the CDMA timing ... | 11/06/2007 |
| 7283093 | Method and system for monitoring location based service emitter infrastructure A system and method for monitoring location based service emitter infrastructure. Beacon data is stored, the beacon data transmitted by beacons in an area and detected by a client device that is moved along a path at the location. The beacon data along the path of t... | 10/16/2007 |
| 7280072 | System for the relative navigation of aircraft and spacecraft using a phased array antenna A system for the relative navigation of aircraft and spacecraft is disclosed which uses a series of short duration, unmodulated radio pulses transmitted from a phased array antenna. The aircraft or spacecraft whose position is to be determined from another is called... | 10/09/2007 |
| 7272404 | Position acquisition A first transceiver (4, 30) can position itself by forming an ad hoc network (20) of transceivers which assist the first transceiver in acquiring its position. A dedicated infrastructure such as GPS satellites is not required. The first transceiver ( | 09/18/2007 |
| 7268703 | Methods, systems, and devices for cartographic alerts Systems, devices, and methods are provided for marine navigation and course calculation for avoiding preselected conditions. An electronic marine navigation device with marine course calculation capabilities includes a processor connected to a memory that includes c... | 09/11/2007 |
| 7267303 | Method and system for providing cruciform steered, bent biconic and plasma suppression for maximum accuracy A system for reducing plasma induced communication disruption is disclosed. The system utilizes an electrophilic gas injectant, bent reentry vehicle nose shaping and a number of flaps configured to provide 3-axis steering capability. Injecting electrophilic gas inje... | 09/11/2007 |
| 7262692 | Emergency evacuation guiding system using signal strength for guidance An emergency evacuation guiding system for guiding people to run away in a building system as an accident occurs comprises a detector system for detecting an accidents which is occurred in the building system; an informing system for informing people that an acciden... | 08/28/2007 |
| 7256736 | Location system with swept digital beacon A detection system includes a fixed-position transmitter and a mobile unit. The transmitter digitally transmits a data packet including angle information associated with the transmitter, and the mobile unit includes a receiver for receiving the transmitted data pack... | 08/14/2007 |
| 7251223 | Low-height, low-cost, high-gain antenna and system for mobile platforms A communication system and methodology for providing a signal of interest to at least one movable platform, for possible use by passengers associated with the movable platform, from an information source, where the movable platform is not within a signal coverage ar... | 07/31/2007 |
