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8174448 |
Multilateration apparatus
In a multilateration apparatus a correlator is provided with a time of arrival correlation window which is set to cater for the path lengths that may be experienced before a signal from an object...
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8149168 |
Position determination using wireless local area network signals and television signals
Apparatus having corresponding methods and computer-readable media comprise a first receiver to receive a wireless television signal; a first measurement unit to generate a measurement of the...
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8138975 |
Interference detection, characterization and location in a wireless communications or broadcast system
A Wide Area Sensor Network (WASN) is disclosed that utilizes wideband software defined radios (SDRs) to monitor RF energy over a wide frequency range, detect when critical frequencies are being...
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8138967 |
Multilateration system and method
A multilateration system and method includes a plurality of receiver stations for receiving signals from an aircraft, and a controller that derives the position of the aircraft by applying a...
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8098200 |
Method and system for locating signal emitters using residual values
A method and system determine a location of an emitter using at least three sensors, each receiving a signal from the emitter. Cross-correlation data is determined for the received signals at...
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8095161 |
System and method for determining a transmit timing for communication in a radio communication system
A method for determining a transmission timing is provided. The method includes steps of, at a first point in time, determining a first transmission timing for transmissions from a user entity to a...
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8077091 |
System and method for determining a position of a mobile device within a surveillance volume in the presence of multipath interference
A system of determining a position of a mobile device within a surveillance volume includes a phase difference array comprising a spatially diverse array of N sensors for detecting RF signals from...
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8077659 |
Method and apparatus for locating mobile multimedia multicast system capable wireless devices
Estimating a current location of a receiver in a MediaFLO™ (Forward Link Only) mobile multimedia multicast system comprises receiving digital signals comprising a MediaFLO™ superframe com...
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8059108 |
Determining the location of a stylus for a portable electronic device
Mechanisms are provided for determining the location of a stylus for a portable electronic device. One embodiment provides for determining at a first time that a stylus was not returned to a stylus...
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8049668 |
Method and system for locating signal emitters using iterative residual weighting
A method and system for determining a location of a first device that emits a signal: provide at least three sensors separated and spaced apart from each other; determine estimated location data...
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8044859 |
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...
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8041304 |
Area estimation system, area estimation method and area estimation apparatus
An area estimation apparatus 100 includes: a reception level receiving unit 110 configured to receive, from a plurality of the radio signal capturing terminals 40a and 40b via the network, a radio...
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8019352 |
System, method, and apparatus for determining and using the position of wireless devices or infrastructure for wireless network enhancements
A system and method for estimating the position of wireless devices within a wireless communication network combines measured RF channel characteristics for the wireless device with one or more...
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8014791 |
Method and system for determining position of a wireless electronic device within a volume
A method for determining a position of a wireless electronic device within a volume includes detecting a signal transmitted by the wireless device during two-way communication to and from a first...
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8009100 |
Radio frequency emitter detection and location method and system
A system and method for detecting and locating a radio frequency emitter. A number, N, of receiving units using the same bandwidth, center frequency, and measurement time duration receive signals...
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7999741 |
Systems and methods for facilitating a first response mission at an incident scene using precision location
Systems and methods for facilitating a first response mission at an incident scene, such as an accident site, a natural or human-made disaster site, or any other first response site. One system is...
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7995988 |
System and method for identifying the position of mobile terminals
The present invention relates to a system 10 and corresponding method for locating mobile terminals 12 following a location request whereto is associated information whose content depends on the...
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7957902 |
Method and system for determining cloud-to-ground lightning information
A real-time, multi-sensor local-area lightning detection network system. The system uses waveform indicative of electrostatic field changes with respect to time is generated at each of N locations...
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7952523 |
Method and apparatus for passively locating radar emissions from rotating transmitters
Systems and methods are presented for passive location of transmitters in which two or more receivers time stamp received signals from target transmitters and the time stamped data for each target...
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7952363 |
System and method for sorting detection of signal egress from a wired communication system
Issuance of work orders in response to monitoring signal egress from shielding integrity flaws in a cable communication system by detecting received signal strength from a mobile receiver only...
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7952524 |
Method and system for positioning mobile units based on angle measurements
A method and system for positioning mobile units using angle measurements taken by neighboring mobile units is disclosed. A selected mobile unit and mobile units in the vicinity of the selected...
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7928908 |
Apparatus and method for determining receiver performance in a multilateration system
In a multilateration system receivers are grouped into two groups. The first group is used to determine a position of a signal source, for example, an aircraft equipped with a SAR transponder. From...
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7916085 |
Method and apparatus for locating the source of radio frequency emissions
At least two receiver sets are provided. A data processor is in communication with the receiver sets, wherein the data processor tags position data and radio frequency emission data from the...
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7911385 |
RF transmitter geolocation system and related methods
A system for geolocating a radio frequency (RF) transmitter in the presence of multipath interference may include a plurality of RF receivers arranged in spaced relation. The system may also...
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7911384 |
System and method for enhancing the accuracy of a location estimate
A method for enabling a system to enhance the accuracy of a location estimate modifies weights in a weight matrix associated with receiver station measurements in parallel with successive...
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7907089 |
Method for tracking a transmitter by means of a synthetic sparse antenna network
Method of locating one or more transmitters on the basis of an array of sensors moving with respect to the transmitters comprising at least the following steps: determining the direction vectors...
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7898344 |
Phase-locked oscillator and multi-radar system using same
In a multi-radar system, configured comprising a plurality of radar units which generate and output signals the frequency of which increases and decreases periodically, each radar unit generates...
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7898983 |
Methods and apparatus supporting traffic signaling in peer to peer communications
Methods and apparatus related to peer to peer communication networks are described. An active connection list is maintained by a wireless communications device supporting peer to peer...
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7893876 |
System and method for determining locations of medical devices
The location of a medical device is determined by receiving one or more signals at the medical device transmitted by one or more beacons, respectively, at known locations. The one or more signals...
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7889133 |
Multilateration enhancements for noise and operations management
Multilateration techniques are used to provide accurate aircraft tracking data for aircraft on the ground and in the vicinity of an airport. From this data, aircraft noise and operations management...
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7876268 |
System and method for precise location of receiving antennas
Various aspects of the present invention are shown and described, each of which has stand alone utility in a navigated medical environment. A receiver position calibration system and method...
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7859465 |
System and method for multilaterating a position of a target using mobile remote receiving units
A method of multilaterating the position of a target, including the steps of deploying a plurality of time synchronized receiving units in a network that allows the receiving units to communicate...
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7848748 |
Method for characterising emitters by the association of parameters related to the same radio emitter
Method of using one or more transmitters and/or one or more parameters associated with a transmitter by using a reception station comprising a device suitable for measuring over time a set of K...
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7847734 |
System and method for multilaterating a position of a target using mobile remote receiving units
A method of multilaterating the position of a target, including the steps of deploying a plurality of time synchronized receiving units in a network that allows the receiving units to communicate...
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7830308 |
Apparatus for multilateration and method
To cater for the positioning of an aircraft in a boundary zone between two adjacent multilateration systems, the controller (14) in one system receives Time Difference of Arrival data provided by...
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7830309 |
Location system
A portable location device for use in a location system, the device comprising a transmitter for transmitting ultra-wideband signals, a receiver for receiving non-ultra-wideband signals and a...
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7821458 |
Apparatus and method for locating a terminal in a broadband wireless communication system
An apparatus and method for locating a terminal in a broadband wireless communication system are provided. The apparatus for locating the terminal includes a candidate region determiner, a virtual...
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7804448 |
Portable, iterative geolocation of RF emitters
Iterative geolocation of a stationary RF emitter through the use of TDOA may include the use of a single portable geolocation (e.g., TDOA) sensor, a pair of portable geolocation sensors and three...
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7801736 |
System, method, and article of manufacture for locating and communicating with a patron at a hospitality facility
A system, method, and article of manufacture for locating or communicating with a patron at a hospitality facility includes a server and a plurality of client terminals. The server may receive,...
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7800541 |
Methods and systems for determining the location of an electronic device
Embodiments of the present invention include a method of determining a location of a mobile device. The method comprises transmitting a signal between a plurality of known locations and receiving...
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7777676 |
Method of lightning location using time difference of arrival technology with auto correlation
There is disclosed a system for identifying a source location of an electromagnetic signal having a known waveform. Radio receiving equipment located at three of more monitoring stations receives...
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7746275 |
Position detecting system and position detecting server
A position detecting system includes an RFID terminal configured to transmit an identification information signal by radio; a plurality of receiving devices configured to receive the identification...
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7733270 |
Position location using global positioning signals augmented by broadcast television signals
Apparatus having corresponding methods and computer-readable media comprises: a first receiver adapted to receive, at a user terminal, a broadcast television signal from a television signal...
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7710322 |
Extensible object location system and method using multiple references
An ultra wideband (UWB) or short-pulse RF system is disclosed that can be used to precisely locate or track objects (such as personnel, equipment, assets, etc.) in real-time in an arbitrarily...
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7667649 |
Detection of time of arrival of CDMA signals in a wireless location system
In a Wireless Location System (WLS) deployed in connection with a CDMA-based wireless communications system, Location Measurement Units are used to collect multi-path corrupted radio signaling for...
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7660591 |
Propagation loss model based indoor wireless location of stations
A method and apparatus for determining a location of a transmitter includes taking a Received Signal Strength (RSSI) measurement at a plurality of locations. Next, a known transmit power is...
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7646330 |
System and method for locating objects and communicating with the same
Communication between a remote locator and a transponder is used to determine the relative position of the transponder. The transponder and locator each include a transmitter and a receiver. The...
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7636062 |
Location device and system using UWB and non-UWB signals
A portable location device for use in a location system, the device comprising a transmitter for transmitting ultra-wideband signals, a receiver for receiving non-ultra-wideband signals and a...
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7630327 |
Method for data maintenance and integration including interpolation
A system and method of managing collection and maintenance of performance data for a wireless communications network including collecting configuration data for the network, encoding the collected...
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7626546 |
Methods and systems for detection and location of multiple emitters
Systems and methods for detection and geolocation of multiple emitters that are emitting RF signal energy on a common frequency, and that may be implemented to separate, geolocate, and/or determine...
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