Patents for G01S 1 - Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith (15,825) |
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12/05/2001 | CN1325492A Method and apparatus for acquiring satellite positioning system signals |
12/04/2001 | US6327535 Location beaconing methods and systems |
12/04/2001 | US6327473 Method and apparatus for increasing the sensitivity of a global positioning satellite receiver |
12/04/2001 | US6327298 Post-correlation temporal nulling |
12/04/2001 | US6326918 Method and apparatus for geographic-based communications service |
11/29/2001 | WO2001090772A1 Gps receiver |
11/29/2001 | WO2001090771A1 Satellite/radio based tracing system |
11/29/2001 | US20010047243 GPS receiver with cross-track hold |
11/29/2001 | US20010046870 Modified transmission method for improving accuracy for E-911 calls |
11/29/2001 | US20010046256 Strong signal cancellation to enhance processing of weak spread spectrum signal |
11/29/2001 | US20010046133 Direct view lighting system with constructive occlusion |
11/29/2001 | DE10026519A1 Mobile telephone that can be used for locating buried people, has transceiver that has functional assembly with circuit arrangement and direction function for locating people buried in accident |
11/28/2001 | EP1157282A1 Sensor system |
11/28/2001 | CN1323991A Method for quickly catching GPS signal from GPS system |
11/27/2001 | US6324474 Method for establishing coverage area and accuracy of a wide-area differential global positioning system |
11/27/2001 | US6324393 Auto locating emergency rescue transmitter (ALERT) |
11/27/2001 | US6324392 Emergency locator and communicator |
11/27/2001 | US6323805 Data boundary aware base station assisted position location |
11/27/2001 | US6323804 Method and apparatus for GPS time determination |
11/27/2001 | US6323803 System and method for incremental broadcast of GPS navigation data in a cellular network |
11/22/2001 | WO2001089108A1 Method and apparatus for code phase tracking |
11/22/2001 | WO2001089105A1 A method of despreading a spread spectrum signal |
11/22/2001 | WO2001087708A2 Selectable range ring for a cockpit display |
11/22/2001 | WO2001006669A8 Systems and methods for maintaining operation of a receiver co-located with a transmitter and susceptible to interference therefrom by desensitization of the receiver |
11/22/2001 | US20010044309 Internet distributed real-time wireless location database |
11/22/2001 | US20010043644 Method of despreading a spread spectrum signal |
11/22/2001 | US20010043641 System and method for narrowing the range of frequency uncertainty of a doppler shifted signal |
11/22/2001 | US20010043148 System and method for providing geographic-based advertising |
11/22/2001 | CA2407742A1 Selectable range ring for a cockpit display |
11/20/2001 | US6321077 Reception control system for automobile |
11/20/2001 | US6320536 GPS receiver |
11/15/2001 | WO2001086893A2 Data packet communications system with a plurality of antennas |
11/15/2001 | WO2001086318A1 Satellite-based positioning system receiver for weak signal operation |
11/15/2001 | WO2001086316A2 Method and apparatus for compensating local oscillator frequency error |
11/15/2001 | WO2001047171A3 Strong signal cancellation to enhance processing of weak spread spectrum signal |
11/15/2001 | US20010040526 System for processing directional signals |
11/15/2001 | CA2411607A1 Satellite-based positioning system receiver for weak signal operation |
11/14/2001 | CN1322452A Improvements in downlink observed time difference measurements |
11/14/2001 | CN1322300A Method and apparatus for communicate auxiliary and location information between cellular telephone network and global positioning system |
11/13/2001 | US6317688 Method and apparatus for achieving sole means navigation from global navigation satelite systems |
11/13/2001 | US6317604 Centralized database system for a wireless location system |
11/13/2001 | US6317602 Signal processing system for locating a transmitter |
11/13/2001 | US6317081 Internal calibration method for receiver system of a wireless location system |
11/13/2001 | US6317078 Method and device for reception processing of a GPS satellite L2 signal |
11/08/2001 | WO2001084745A1 Method and apparatus for interference reduction |
11/08/2001 | WO2001084176A1 Low signal-to-noise ratio positioning system |
11/08/2001 | WO2001084175A1 Method and system for determining geographical co-ordinates in mobile communications networks |
11/08/2001 | WO2001084174A2 Miniature electronic personal locator beacon |
11/08/2001 | WO2001084080A1 Global positioning system tag system |
11/08/2001 | WO2001039698A8 Multipath and tracking error reduction method for spread-spectrum receivers |
11/08/2001 | US20010039476 Global Positioning System tag system |
11/08/2001 | CA2406285A1 Miniature electronic personal locator beacon |
11/07/2001 | EP1152546A2 System for acquiring spread spectrum signals |
11/07/2001 | EP1152255A2 Fast GPS signal acquisition in GPS systems |
11/07/2001 | EP1152254A2 Combined GPS and CDMA in a mobile transceiver |
11/07/2001 | EP1151495A1 Rearview mirror with integrated microwave receiver |
11/07/2001 | EP1151321A1 Method and apparatus for gps assistance in a communication system |
11/06/2001 | US6314370 Map-based navigation system with overlays |
11/06/2001 | US6314366 Satellite based collision avoidance system |
11/06/2001 | US6314363 Computer human method and system for the control and management of an airport |
11/06/2001 | US6314308 Method and apparatus for providing reserve power in a cellular telephone |
11/06/2001 | US6314281 Method and apparatus for precisely locating a mobile unit |
11/06/2001 | US6313789 Joint tracking of the carrier phases of the signals received from different satellites |
11/06/2001 | US6313787 Method and apparatus for assisted GPS protocol |
11/06/2001 | US6313786 Method and apparatus for measurement processing of satellite positioning system (SPS) signals |
11/05/2001 | CA2308001A1 Ice hockey arrays computer system (ihacs) |
11/01/2001 | WO2001081941A1 Multipath propagation detection and avoidance method and system |
11/01/2001 | WO2001081939A1 Radio frequency beacon |
10/31/2001 | EP1149373A1 Fleet position monitoring system |
10/31/2001 | EP1149304A1 Method of gps navigation and receiver |
10/31/2001 | EP1149302A1 Method and apparatus for code phase correlation |
10/31/2001 | CN2457296Y Satellite positioning safe |
10/31/2001 | CN1319961A GPS receiver and portable communication device |
10/31/2001 | CN1319955A Intensification for GPS system signal test |
10/30/2001 | US6311128 Combined navigation and mobile communication satellite architecture |
10/30/2001 | US6311127 Satellite navigation system having redundant signal processing and matched filtering |
10/30/2001 | US6310561 Transmission system and coding communication method for a transmission system |
10/25/2001 | WO2001079878A2 Personal communications device with gps receiver and comon clock source |
10/25/2001 | WO2001079877A2 Signal detector and method employing a coherent accumulation system to correlate non-uniform and disjoint sample segments |
10/25/2001 | US20010034210 Enhanced GPS receiver utilizing wireless infrastructure |
10/25/2001 | US20010033627 Method for performing location determination and an electronic device |
10/25/2001 | CA2305633A1 Outdoor competitor gps-based data logger |
10/24/2001 | EP1148344A1 Positioning of a wireless terminal with satellite positioning signals or base station signals |
10/24/2001 | CN1318752A Acquisition of pilot phase offset delay parameter for radio terminal |
10/23/2001 | US6308077 Apparatus and method for providing synchronization of base-stations in a communication system |
10/23/2001 | US6307504 Method and system for using altitude information in a satellite positioning system |
10/23/2001 | US6307485 Map display unit |
10/20/2001 | CA2338615A1 Obtaining pilot phase offset time delay parameter for a wireless terminal of an integrated wireless-global positioning system |
10/18/2001 | WO2001077705A2 Global positioning system receiver capable of functioning in the presence of interference |
10/18/2001 | WO1999057575A3 Method and system for using altitude information in a satellite positioning system |
10/17/2001 | EP1146349A2 A method for performing location determination and its corresponding receiver |
10/17/2001 | EP1145036A1 Method for improving the wireless location system |
10/17/2001 | EP1145035A2 Method and system for using altitude information in a satellite positioning system |
10/17/2001 | EP1145034A1 Bandwidth synthesis for wireless location system |
10/17/2001 | EP1145032A2 Calibration for wireless location system |
10/17/2001 | EP1145031A1 A method of and system for estimating a time of arrival of a radio signal |
10/16/2001 | USRE37408 Reduction of time to first fix in an SATPS receiver |
10/16/2001 | US6304218 Wireless communication system and method and system for detection of position of radio mobile station |
10/16/2001 | US6304216 Signal detector employing correlation analysis of non-uniform and disjoint sample segments |
10/16/2001 | US6304212 Position data display/control apparatus and methods |