Matches 1 - 50 out of 299 1 2 3 4 5 6 >
Match Document Document Title
7602339 Method and system for extensible position location  
A method and system for extensible positioning that uses a primary reference node at a known first position and a secondary reference node at a second position, where a range is measured between...
7595755 Distance estimation  
A method for estimating the distance between a transmitter and a receiver, the transmitter being arranged to transmit a signal as a series of bursts, and the carrier frequency of each burst being...
7592956 Wireless transmitter location determining system and related methods  
A location determining system for a wireless transmitter is carried by a platform movable relative to the wireless transmitter. The location determining system may include an antenna, and a...
7579990 Method and system for estimating the location of a wireless terminal from a received signal strength  
A first estimated location of a target terminal to be estimated in its location is obtained based on information derived from radio signals for location estimation and also locations of anchor...
7570213 Method and apparatus for detecting and locating intrusion in a wireless network  
Method and apparatus for locating an intruding radio frequency signal in a wireless network. Relative distance measurements are computed between pairs of receivers from a plurality of receivers to...
7564404 Determining precise direction and distance to a satellite radio beacon  
The present invention discloses a device and method for precisely determining the direction and distance to a satellite radio beacon. In one embodiment, the disclosed device is used for SAR (search...
7548517 Method and apparatus for determining the location of a node in a wireless system  
A location technique is utilized where channel-model parameters are originally estimated prior to location taking place. Location then takes place using a first set of known-located nodes, and the...
7545261 Passive method and apparatus for alerting a driver of a vehicle of a potential collision condition  
The present invention discloses a vehicular collision alert system ( 100 ) which receives signals ( 104 ) from devices ( 102 ) commonly associated with vehicular use. The direction ( 308 ) of the...
7541978 Antenna-assisted two-point positioning system  
An antenna-assisted two-point positioning system for positioning a mobile device is disclosed. The antenna-assisted two-point positioning system comprises a first wireless communication module...
7528776 Beacon-assisted precision location of untethered client in packet networks  
A novel beacon-based position location technique for efficient location discovery of untethered clients in packet networks is disclosed. The position location technique utilizes the...
7515103 Measuring distance using wireless communication  
A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the...
7495614 System and method for multipath mitigation using clustered positioning signals  
A diversity system for positioning systems is disclosed, whereby a plurality of positioning signals, which are transmitted and/or are received from substantially the same location, are received and...
7463194 Method for reducing radio ranging errors due to clock frequency offsets  
A method reduces errors in two-way ranging between transceivers due to a frequency offset. A first transceiver measures a time C A1 between transmitting a request frame and receiving a reply...
7450069 Ranging system and method  
A system and method for estimating the range between two devices performs two or more ranging estimates with subsequent estimates performed using a clock that is offset in phase with respect to a...
7451059 True azimuth and north finding method and system  
A method and a system are recited for obtaining a true azimuth heading for correcting a coarse azimuth heading measured from an observation position to a specific selected target by operating a...
7443342 Reception time determining apparatus and distance measuring apparatus using the same  
The invention provides a reception time determining apparatus which can measure reception time to a high accuracy, without expanding an occupied bandwidth, and a distance measuring apparatus which...
7389114 Estimating the location of inexpensive wireless terminals by using signal strength measurements  
A system is disclosed that enables the estimation of the location of a wireless terminal in a wireless network. The illustrative embodiment works without requiring modifications to be made to the...
7383053 Position estimation of transceivers in communication networks  
This invention provides a system and method using wireless communication interfaces coupled with statistical processing of time-of-flight data to locate by position estimation unknown wireless...
7372405 Position location using digital video broadcast television signals  
Apparatus to determine the position of a user terminal, the apparatus having corresponding methods and computer-readable media, comprises a receiver to receive, at the user terminal, a wireless...
7369941 Collision detection system and method of estimating target crossing location  
A collision detection system and method of estimating a crossing location are provided. The system includes a first sensor for sensing an object in a field of view and sensing a first range defined...
7362270 System and method to perform network node localization training using a mobile node  
A method and system for determining a location of at least one stationary node of a wireless network, which includes providing a predetermined path within a geographic space of the wireless...
7358899 Distance estimation in a communication system  
The present invention relates to estimation of the distance between stations that communicate in a communication system over a radio interface. In the system at least one of the stations transmits...
7359038 Passive determination of ground target location  
Ground targets can be passively identified on uneven terrain from an observation point elevation above a known reference point, a line-of-sight inclination angle, an azimuth angle and a digital...
7339526 Synchronizing ranging signals in an asynchronous ranging or position system  
In a local positioning system, the land-based transmitters include free running oscillators or oscillators free of clock synchronization with any remote oscillator. A reference receiver receives...
7339524 Analog decorrelation of ranging signals  
In a local positioning system, a receiver is adapted for receiving signals from a land-based transmitter. The receiver includes an analog decorrelator for decorrelating the transmitted spread...
7327314 Two-way ranging between radio transceivers  
A method estimates a distance between transceivers in a wireless communications network. A first time interval T is set in a transmitter and a receiver. A signal is transmitted from the transmitter...
7312753 Mobile terminal positioning system  
There is provided a radio base station apparatus which is capable of increasing the probability of detection of a first path even if a radio transmission path fluctuates due to fading or the like,...
7308276 Method for locating mobile units based on received signal strength ratio  
Location of mobile units in a wireless local area network is based on use of signal strength ratios and other criteria. In one embodiment absolute value of signal strength is used to derive a...
7298323 Apparatus and method for locating user equipment using global positioning system and dead reckoning  
An apparatus and method for locating a UE using a GPS and a dead-reckoning sensor are disclosed. At an initial time, the UE calculates its initial position and the initial position of a serving...
7292187 Determining a position of at least one beacon in a location system  
A position for a beacon in a location system is determined based on distances measured from positions in a local coordinate system for the location system and from intersection points of circles....
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...
7269424 Mobile terminal implementing a ranging signal receiver and method  
Mobile terminal implementing a ranging signal receiver and method. Means are provided to incorporate ranging signal reception capability into a mobile terminal (such as a UMTS terminal)...
7263369 Distance determination method for use by devices in a wireless network  
The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network...
7262733 Method of estimating the location of a device  
Methods of providing an estimate of the location of a first device are discloses comprising the steps of determining the location of a separately housed, second device located near to the first...
7248882 Distance determination apparatus for use devices in a wireless network  
The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network...
7239277 Method and system for extensible position location  
A method and system for extensible positioning that uses a primary reference node at a known first position and a secondary reference node at a second position, where a range is measured between...
7209751 System and method for proximity motion detection in a wireless network  
Systems and Methods are described for determining proximity motion of a mobile wireless device around a fixed target node. The present invention provides a method of regressively analyzing the...
7205938 Wireless node location mechanism responsive to observed propagation characteristics of wireless network infrastructure signals  
A wireless node location mechanism that dynamically adapts to changes to a surrounding physical environment that affect the propagation of radio signals. The wireless node location mechanism...
7203500 Apparatus and associated methods for precision ranging measurements in a wireless communication environment  
An apparatus and associated methods to provide precision ranging measurements in an ultrawideband (UWB) wireless communication system are generally described. In this regard, according to one...
7187327 Method and system for determining the position of an object  
A method and system for determining the location of an object. The system may implement a number of sensors at different locations that are positioned to receive a transmitted or reflected signal...
7155201 Method and network for emergency call services  
A method and network provide mobile information for emergency calls based on mobile position during a call in progress. As soon as an Emergency Services Call is invoked, the Mobile Station position...
7151490 System and method for estimating separation distance between impulse radios using impulse signal amplitude  
A method and system are provided for locating an impulse radio. Impulse radio signals are communicated between a first impulse radio and a plurality of second impulse radios. A received signal...
7116272 Direction and distance finder for locating distress signals  
The present invention relates to a system and method for locating the direction and distance to a RF signal source from an avalanche beacon to find an avalanche victim. The system and method...
7106203 Self-activating system and method for alerting when an object or a person is left unattended  
A system and method use a wireless tether comprising a transmitter and a receiver to alert a caregiver that an object has been left unattended. A detector senses the presence of the object, usually...
7099676 System and method for location and motion detection in a home wireless network  
A method and system for determining location and/or motion for one or more wireless devices communicating at short range (i.e. less than about 30 feet) with other wireless devices on a wireless...
7065325 Self calibration of signal strength location system  
A system for locating mobile units in a data communications system based on signal strength measurements of mobile unit transmissions is calibrated for variations in mobile unit transmitter power...
7064711 Method for iterative determination of distance between receiving station and transmitting station and also calculating unit and computer software product  
Information received by a calculating unit via a signal from a transmitting station to a receiving station is provided with a code, a number of integral multiples of the code coming into the...
7061428 Frequency hopping range estimation with low power consumption  
An arrangement comprising a master unit and one or more slave units, where the master sends out bursts, at specified intervals, in a frequency hopping manner, with each burst being at a different...
7042395 Method of providing an estimate of a location  
A method of providing an estimate of the location of first and second devices MS 1 , MS 2 comprising the steps of obtaining at least one range measurement from the first device MS 1 to a known...
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...
Matches 1 - 50 out of 299 1 2 3 4 5 6 >