Patents
Sitemap › G01 - Measuring; Testing › G01S - Radio direction-finding; Radio navigation; Determining distance or velocity by use of radio waves; Locating or presence-detecting by use of the reflection or reradiation of radio waves; Analogous arrangements using other waves › 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
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)
12/2003
12/16/2003US6664921 Apparatus for receiving ranging signals
12/16/2003CA2165420C System and method for modulating a carrier frequency
12/11/2003WO2003102893A1 System and method for cdma geolocation
12/11/2003WO2003102497A1 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation employing modulated signal
12/11/2003WO2002099454A3 Method and apparatus for generating and distributing satellite tracking information
12/11/2003US20030227963 Spread spectrum bit boundary correlation search acquisition system
12/11/2003US20030227616 Spherically mounted light source with angle measuring device, tracking system, and method for determining coordinates
12/11/2003US20030227412 Low probability of intercept (LPI) millimeter wave beacon
12/10/2003CN1461415A Satellite position measurement system
12/10/2003CN1130844C Method and structure for spread spectrum receiver
12/09/2003US6662107 Calibrated real time clock for acquisition of GPS signals during low power operation
12/09/2003US6662103 Method and system for creating a user-selectable arbitrary coordinate frame
12/09/2003US6661379 Antenna selection method for a wireless location system
12/09/2003US6661372 Client-server based remote locator device
12/09/2003US6661371 Oscillator frequency correction in GPS signal acquisition
12/04/2003WO2003100455A1 Method and system for processing positoning signals based on predetermined message data segment
12/04/2003WO2003100451A2 Gps-based underwater cable positioning system
12/04/2003WO2003089951A3 Method for optimal search scheduling in satellite acquisition
12/04/2003US20030225514 Method and apparatus for substituting sensor data for satellite signal in gps receiver
12/04/2003US20030225489 Automated terrain awareness and avoidance system
12/04/2003US20030223477 Signal receiver using coherent integration in interleaved time periods for signal acquisition at low signal strength
12/04/2003US20030222820 Wireless location using hybrid techniques
12/04/2003US20030222819 Locating a mobile station using a plurality of wireless networks and applications therefor
12/04/2003US20030222815 Method and apparatus for determining positioning relative to utility lines
12/04/2003US20030222814 Global radiolocalization system
12/03/2003EP1366376A2 Method and apparatus providing improved position estimate based on an initial coarse position estimate
12/03/2003CN1460189A Position measuring method and mobile communication terminal
12/03/2003CN1460188A Method and apparatus for locating source of unknown signal
12/03/2003CN1129800C Method of and system for determining route or travel of vehicle
12/02/2003US6658048 Global positioning system code phase detector with multipath compensation and method for reducing multipath components associated with a received signal
12/02/2003US6657587 Tracking system using miniaturized concealable communications module
12/02/2003US6657584 Locating an object using GPS with additional data
12/02/2003US6657579 Method for measuring distance and position using spread spectrum signal, and an equipment using the method
11/2003
11/27/2003WO2003098840A1 Sensitive gps receiver
11/27/2003WO2003098829A1 System and method for the detection and compensation of radio signal time of arrival errors
11/27/2003WO2003098817A2 System and method for frequency management in a communications positioning device
11/27/2003WO2003098259A1 Determining the position of a receiver and/ or the system time of a positioning system
11/27/2003WO2003098258A1 Frequency management in a communications positioning device
11/27/2003WO2003098256A1 Gps receiver with improved immunity to burst transmissions
11/27/2003US20030219066 Method and apparatus for performing signal correlation
11/27/2003US20030218568 Gps near-far resistant receiver
11/27/2003US20030218567 Culled satellite ephemeris information for quick assisted gps location determination
11/27/2003CA2485601A1 Determining the position of a receiver and/ or the system time of a positioning system
11/26/2003EP1365255A1 System and method for positioning of an electronic device
11/26/2003EP1365254A1 A method of aligning predicted navigation information
11/26/2003EP1364477A2 Time synchronization of a satellite positioning system enabled mobile receiver and base station
11/26/2003EP1364225A1 Satellite-based positioning system receiver for weak signal operation
11/26/2003EP0770288B1 A method for rapid signal acquisition in a satellite communications system
11/26/2003CN1458534A Electronic equipment positioning method, a system and an electronic equipment
11/25/2003US6654686 No preamble frame sync
11/25/2003US6654482 Method and device for locating and guiding a mobile unit equipped with a linear camera
11/25/2003US6653976 Method and apparatus for automatic and autonomous assignment of PRN codes to a multiplicity of pseudolites
11/20/2003WO2003096059A1 System and method for reference data processing in network assisted position determination
11/20/2003WO2003096058A1 Improved high-power solid-state switch for dynamic antenna modulation tuning
11/20/2003WO2003075630A3 Position location using gps augmented by tv
11/20/2003WO2003067277A3 Method and apparatus for testing assisted position location capable devices
11/20/2003WO2003050960A3 Combination rfid and gps functionality on intelligent label
11/20/2003WO2003038464A3 Calibrated real time clock for acquisition of gps signals during low power operation
11/20/2003WO2003029836A3 Global positioning apparatus and method for using a temperature compensated oscillator to perform a position fix
11/20/2003WO2003027704A3 Satellite attitude adjustment for gps initialization
11/20/2003WO2003023440A3 System and method to estimate the location of a receiver in a multi-path environment
11/20/2003US20030216863 Gps receiver with improved immunity to burst transmissions
11/20/2003US20030215035 System and method for the detection and compensation of radio signal time of arrival errors
11/20/2003US20030214436 System and method for frequency management in a communications positioning device
11/20/2003US20030214435 Method of and apparatus for implementing high speed data communication by phase (frequency) modulation of Loran-C navigation system and the like using solid-state pulse transmitters and high-power solid state switching for dynamic antenna tuning
11/20/2003US20030214434 Signal detector employing coherent integration
11/20/2003US20030214433 Method for positioning of an electronic device, a system, and an electronic device
11/20/2003US20030214432 System and method for frequency management in a communications positioning device
11/20/2003CA2485023A1 Improved high-power solid-state switch for dynamic antenna modulation tuning
11/19/2003EP1362437A1 Gps assistance messages in cellular communications networks and methods therefor
11/19/2003CN1457563A GPS assistance messages in cellular communications networks and methods therefor
11/19/2003CN1457435A Memory reduction method for DSP-based GPS processor
11/18/2003US6651031 Method for providing time using a multiple-clock model and a clock system using such a model
11/18/2003US6651001 Method of and system and apparatus for integrating maintenance vehicle and service personnel tracking information with the remote monitoring of the location, status, utilization and condition of widely geographically dispersed fleets of vehicular construction equipment and the like to be maintained, and providing and displaying together both construction and maintenance vehicle information
11/18/2003US6651000 Method and apparatus for generating and distributing satellite tracking information in a compact format
11/18/2003US6650879 Personal communications device with GPS receiver and common clock source
11/18/2003US6650597 Timing systems
11/18/2003US6650288 Culled satellite ephemeris information for quick assisted GPS location determination
11/18/2003US6650285 Method and apparatus for rapidly estimating the doppler-error and other receiver frequency errors of global positioning system satellite signals weakened by obstructions in the signal path
11/18/2003US6650277 Target designation system
11/18/2003US6650150 Numerically controlled oscillator in particular for a radiofrequency signal receiver
11/13/2003WO2003093859A1 System, method, and apparatus for generating a timing signal
11/13/2003WO2003093858A2 Oscillator frequency correction in gps signal acquisition
11/13/2003US20030210656 System and method for reference data processing in network assisted position determination
11/13/2003CA2484504A1 System, method, and apparatus for generating a timing signal
11/12/2003EP1361774A1 Method for handling emergency calls in a mobile network, and terminal, server, and system therefor
11/12/2003EP1361773A1 System and method for position determination
11/12/2003EP1360521A1 A method of despreading gps signals
11/12/2003EP1360520A1 A method of despreading gps signals
11/12/2003EP1360519A1 Mobile device comprising a gps receiver
11/12/2003EP1360518A2 Methods and apparatuses for processing of global positioning system signals with a matched filter
11/12/2003CN1456021A Method for positioning a mobile station
11/12/2003CN1455876A A method of despreading GPS signals
11/12/2003CN1455875A Mobile device comprising a GPS receiver
11/12/2003CN1127880C Improvements in downlink observed time difference measurements
11/11/2003US6647340 Space based augmentation systems and methods using ionospheric bounding data to determine geographical correction source
11/11/2003US6647339 Shared reference station
11/11/2003US6646604 Automatic synchronous tuning of narrowband receivers of a wireless location system for voice/traffic channel tracking
11/11/2003US6646603 Method of providing an estimate of a location
11/11/2003US6646596 Method, system and devices for positioning a receiver
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