Matches 51 - 100 out of 137 < 1 2 3 >
Match Document Document Title
7026983 Location data diffusion and location discovery  
A location discovery method using location data items that originate at known locations (X,Y) and are passed to, and diffused between, entities (A,B) by short-range communication. Each location...
7023381 Multi-frequency pseudolites for carrier-based differential-position determination  
Apparatus and methods for resolving integer ambiguities in position determination. An embodiment of the invention includes a reference system, augmented with multi-frequency pseudolites using a...
6995705 System and method for doppler track correlation for debris tracking  
The present invention is directed to a system and method for Doppler track correlation for debris tracking in PCL radar applications. The disclosed embodiments describe the systems and methods used...
6995708 Local positioning system  
A method to determine position of a user includes sniffing for one or more earth-based media; and if the one or more earth-based media exists, using an earth-based positioning system (PS) receiver...
6963306 Position location and data transmission using pseudo digital television transmitters  
A method, apparatus, and computer-readable media comprising generating a positioning signal comprising a first half-field and a second half-field; and transmitting the positioning signal; wherein...
6961020 Position location using broadcast analog television signals  
A computer program product, apparatus, and method for determining the position of a user terminal. It includes receiving, at the user terminal, a broadcast analog television signal having a...
6957072 Calibration of positioning systems  
Mobile station positioning methods are calibrated using an error bias estimation for refining the determination of the mobile station location which does not require any added hardware to the...
6956523 Method and apparatus for remotely deriving the velocity vector of an in-flight ballistic projectile  
A system and method for rapidly determining the source of an incoming projectile applies controlled, active RF energy source(s) to illuminate a target area/projectile, and exploits Doppler induced...
6952182 Position location using integrated services digital broadcasting—terrestrial (ISDB-T) broadcast television signals  
A method, apparatus, and computer-readable media for determining the position of a user terminal comprises receiving at the user terminal a digital television (DTV) broadcast signal from a DTV...
6941148 Device registry for automatic connection and data exchange between pervasive devices and backend systems  
The present invention relates to communication improvements between a mobile device ( 12 ) and backend system ( 20 ) applications. A special purpose server computer—a Device Registry Server ( 18...
6900762 Methods and apparatus for location determination based on dispersed radio frequency tags  
Systems and techniques for location determination. A plurality of tags emitting radio frequency signals are dispersed throughout a region, such as a building, within which a user's location is to...
6894645 Position estimation  
The invention relates to a method for estimating the position of a receiver receiving code modulated signals from at least one beacon. The method comprises delimiting a region containing the...
6882314 Carrier-based differential-position determination using multi-frequency pseudolites  
Apparatus and methods for resolving integer ambiguities in position determination. An embodiment of the invention includes a reference system, augmented with multi-frequency pseudolites using a...
6882309 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...
6873852 System and method of estimating the position of a mobile terminal in a radio telecommunications network  
A system and method of estimating the position of a mobile terminal (MT) operating in a radio telecommunications network. Expected Received Signal Strength (RSS) values are predicted by a...
6865395 Area based position determination for terminals in a wireless network  
Techniques to estimate the position of a wireless terminal. In a method, the identities of a number of transmitters (e.g., BTSs) to be used to estimate the position are initially received. Expected...
6861984 Position location using broadcast digital television signals  
A computer program product, apparatus, and method for determining the position of a user terminal. It includes receiving at the user terminal a plurality of digital television (DTV) broadcast...
6859173 Position location using broadcast television signals and mobile telephone signals  
A method, apparatus, and computer-readable media for determining the position of a user terminal comprises receiving at the user terminal a broadcast television signal from a television signal...
6830213 Wireless guidance system  
A wireless means of guidance for a device in accordance with the present invention includes receiving signals from at least one wireless base station indicating at least a respective position...
6819286 Location determination for mobile units  
A method for location determination using Bluetooth techniques is applicable within buildings, underground or within other structures. A mobile unit ( 10 ) seeks the location of a cell from...
6816117 Distributed antenna system and method  
System and methods are disclosed for employing one or more radiators having non-unique phase centers mounted to a body with respect to a plurality of transmitters to determine location...
6806830 Electronic device precision location via local broadcast signals  
A location determination apparatus, method and system ( 10, 23, 26, 32, 36, 48, 52, 60, 64, 74, 78, 84, 90, 106 ) that is an improvement upon existing location determining techniques. The invention...
6798376 Mobile communication apparatus and position detection method thereof  
When position measurement accuracy of the present position which the base station distance and position measurement part measures from radio waves coming from base stations is not good, a GPS...
6788253 Method and apparatus for use in improving accuracy in geo-location estimates  
A geo-location technique for use in mobile communications networks employs both FDD and Time Division Duplex (TDD) modes of operation, and is applicable when both FDD and TDD systems are jointly...
6762721 Urban terrain geolocation system  
A system for tracking a moveable object such as a soldier in an urban environment includes a receiver that is positioned on the movable object and a plurality of signal transmitters. The...
6753812 Time-gated delay lock loop tracking of digital television signals  
A computer program product, apparatus, and method for use in determining the position of a user terminal includes receiving at the user terminal a digital television (DTV) broadcast signal...
6720922 Radio-frequency badge for location measurement  
A system and process for determining the location of persons and objects using transmitters (TXs) that transmit location messages to at least one receiver connected to a computer, in a network of...
6720921 Position location and tracking method and system employing low frequency radio signal processing  
A position location system adapted for Military Operations in Urbanized Terrain (MOUT) training exercises that equips a player with a magnetic sensor for detecting a low frequency (LF) magnetic...
6690322 Wireless communications terminal, computer program executable by wireless communications terminal and method for outputting positional information from wireless communications terminal  
A cellular phone receives a position measurement result, which indicates a position of the cellular phone determined based on both GPS satellite information and CDMA base station information, from...
6677900 System for detecting mobile receivers, using digital telebroadcasts transmissions of a ground transmitter network  
A system for detecting mobile bodies, using digital telebroadcasting transmissions of an array of terrestrial transmitters. The digital telebroadcast transmissions include a plurality of carriers,...
6665712 System and method for locating an output device  
A system to locate an output device includes a wireless device including a configuration to display output device information used to locate the output device selected for a printing operation,...
6608592 Location system using beacon transmitters  
A location system includes a plurality of beacon transmitters each positioned at a respective location. Each beacon transmitter includes a plurality of antennas positioned in a circular...
6559800 Position location using broadcast analog television signals  
A computer program product, apparatus, and method for determining the position of a user terminal. It includes receiving, at the user terminal, a broadcast analog television signal having a...
6539229 System and method for mobile location detection in synchronous wireless systems  
A system and method for determining the geographic location of a mobile station in a mobile telephone system is disclosed. The system broadcasts a series of forward link triangulation signals from...
6492945 Instantaneous radiopositioning using signals of opportunity  
Instantaneous radio positioning method and system. Signals from a plurality of spatially distributed transmitters are received at a known reference position and at an unknown position to be...
6430479 Methods, apparatus and computer program products for determining the vertical speed of an aircraft  
A method, an apparatus and a computer program product are provided for accurately determining the vertical speed of an aircraft in a manner independent of signals provided by an air data computer,...
6424290 Narrowband passive differential tracking system (U)  
The tracking of moving vehicles over long distances without emitting illumination signals is accomplished with a narrowband passive differential tracking system. Instead of Providing especially...
6421628 Signal handling device  
A signal handling device enables a data transmission between a plurality of position measuring devices and a master unit. The signal handling device includes a main communications port for...
6380891 GPS receiver with satellite frame synchronization process  
A GPS receiver has a plurality of data demodulator circuits assigned to a plurality of GPS satellites, respectively, and a data memory which stores detailed orbit information of the GPS satellites....
6285320 Apparatus and method for mapping surfaces of an object  
An apparatus and method for mapping surfaces of an object, such as a structure or vehicle, that utilizes transceivers mounted on portable support structures to orient a probe to form a local global...
6271788 Network of equivalent ground transmitters  
A system for differential navigation of an autonomous vehicle in the location with the limited visibility of the sky is disclosed. The system employs a plurality of satellites, a plurality of...
6198935 System and method for time of arrival positioning measurements based upon network characteristics  
An improved system and method for determining a position of a mobile station in a mobile telecommunications network is disclosed. The system includes a database having geographical information...
6195046 Base station with slave antenna for determining the position of a mobile subscriber in a CDMA cellular telephone system  
A method for determining the position of a mobile station using a base station having three antennas. The first antenna is used to transmit a first signal modulated with a first preassigned Walsh...
6161018 Method and system for estimating a subscriber's location in a wireless communication system service area  
At a receiver location in a wireless communication system service area, a set of characteristics that describe a received ray of a subscriber signal is measured. In a model of the wireless...
6130642 Method and system to improve GPS navigation  
A method and system are provided for improving the navigation accuracy of a vehicle guided by the global positioning system (GPS). The system can be ermanent or can be delivered "on station" by...
6054950 Ultra wideband precision geolocation system  
An ultra wideband (UWB) or short-pulse transmission system that enables precise tracking or geolocation of a target over distances of several kilometers. The system includes a set of N (where...
5969678 System for hybrid wired and wireless geographic-based communications service  
A geographic-based communications service system has a mobile unit for transmitting/receiving information, and access points connected to a network. The access points are arranged in a known...
5969679 Method and apparatus for determining whether a wireless station is operating within a prescribed geographic region  
A method and apparatus for determining whether a wireless station is operating within a prescribed geographic location. During an initialization process, the wireless telephone measures propagation...
5960413 Portable system for inventory identification and classification  
The prior art invention entitled Automated End Tally System, has been augmented to include either a scanning radar unit (22c) or a phased array scanning radar unit (42c), for the purposes of...
5943363 Digital spread spectrum GPS navigation receiver  
Disclosed are digital processing techniques for efficiently receiving, sampling and recovering multiple direct-sequence spread-spectrum signals by multiplexing key signal processing elements across...
Matches 51 - 100 out of 137 < 1 2 3 >