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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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7616155 |
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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7612717 |
ULB location system for rescuing avalanche victims
A method for locating a UWB transmitter, without a previously-set reference, using at least one first set of at least three UWB searching transceivers, including first, second, and third...
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7609207 |
System and method for performing time difference of arrival location without requiring a common time base or clock calibration
A method for performing Time Difference Of Arrival (TDOA) that eliminates the need for a common time base or clock calibration and a system for implementing the method. The method relies on a...
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7606290 |
Architecture for signal acquisition with cyclic range search
An architecture for a spread-spectrum transmitter-receiver system in an advanced tactical data link that allows the receiver to readily acquire and synchronize to a desired LPD signal. Signal...
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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...
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7598911 |
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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7576695 |
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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7574291 |
Apparatus and method using compressed codes for comprising latitude/longitude information
A new human interface scheme compresses geographical information, latitudes and longitudes, into a 10 symbols of 36 radices number systems which are based on 36s. It is to simplify the conventional...
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7561105 |
Emitter locating using time-difference-of-arrival (TDOA) techniques
The present invention provides a method of selecting receiving pairs from a set of at least three receivers that may be used to localize an emitter. This involves identifying the set of at least...
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7557754 |
Method for use in a multilateration system and a multilateration system
Groupings of receivers for determining a target location by a multilateration system are selected to give the best geometric dilution of precision result by eliminating the receiver that makes the...
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7557753 |
Spacecraft hardware tracker
A GPS tracker is disposed on launch hardware that separates from a spacecraft launch vehicle during ascent to orbit with the launch hardware having a suborbital trajectory from launch to impact...
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7557747 |
Method and apparatus using fast electronic switching for multi-channelizing a single-channel radar system
According to typical practice of an inventive radar system, a switching device is capable of activating a receiver array one at a time so that when a receiver is activated the remaining receivers...
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7551139 |
Multi-platform precision passive location of continuous wave emitters
An apparatus comprises a first sensor mounted on a first platform for sampling a first portion of a continuous waveform occurring in a time window and for producing a first signal sample, a second...
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7551138 |
Method and apparatus for signal tracking utilizing universal algorithm
A method and apparatus for signal tracking utilizing a universal algorithm is disclosed. The method and apparatus generally include acquiring a signal measurement corresponding to a signal, forming...
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7545326 |
Wireless tracking system and method with multipath error mitigation
A system ( 50 ) and method ( 300 ) for providing multipath error mitigation for real-time wireless tracking of an object ( 100 ) is disclosed herein. A plurality of sensor readings are obtained...
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7542928 |
For fee distribution of consumer selected content items between different satellite radio service providers
According to the invention, a subscriber to a first satellite radio service can be provided with an option to receive, over their current receiver unit, supplemental content, such as a particular...
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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...
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7541968 |
System and method for detecting an intruder using impulse radio technology
An intrusion detection system and method are provided that can utilize impulse radio technology to detect when an intruder has entered a protection zone. In addition, the intrusion detection system...
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7536169 |
Method of and apparatus for utilizing geographically spread cellular radio networks to supplement more geographically limited stolen vehicle recovery radio networks in activation of radio tracking and recovery of such vehicles
Extending the activation and tracking capability of stolen vehicle recovery dedicated radio-frequency networks by the supplementary use of widely geographically provided cellular...
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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...
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7522158 |
Systems, methods, and media for determining the location of a stylus for a portable electronic device
Methods for determining the location of a stylus for a portable electronic device are disclosed. One embodiment provides a method for determining at a first time that a stylus was not returned to a...
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7518543 |
Method for determining positions of targets by bistatic measurements using signals scattered by the targets
A method for determining the positions of targets by bistatic measurements using signals scattered by the targets is provided in which the velocities of the targets can also be determined. The...
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7515105 |
Method for mapping machine rooms and locating machines within machine rooms
A system and method automatically maps computer center rooms and locates data center components within computer centers. Radio triangulation is used to determine the locations and, optionally,...
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7504992 |
Wireless system using continuous wave phase measurement for high-precision distance measurement
A system and method for monitoring topological changes in a defined area. A grid of sensors is arranged in the area, with known distances between them. The sensors communicate wirelessly with a...
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7498986 |
Methods and systems for locating actuators for improvised explosive devices
A method for determining the location of an actuating device is described. The method includes receiving transmissions from the actuator utilizing a plurality of multiple channel receiving devices,...
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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...
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7492316 |
Wireless time reference system and method
Instead of normalizing time reference of independent spatially-located clocks using a reference tag transmission from known location, the present invention uses an interarrival time interval...
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7471245 |
Method and apparatus for estimating geolocations
Methods and apparatus operable to estimate the geolocation of a signal emitter. In some embodiments, the methods comprise acquiring collection data from a plurality of collector elements, computing...
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7471240 |
Antenna connection detecting device and vehicle navigation device
A current flowing from a circuit section into an integrated antenna flows through a coil. When a pseudo up-link signal is outputted from a VICS (light) signal processing circuit to check a...
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7463195 |
Position location using global positioning signals augmented by 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 broadcast television signal from a television signal...
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7453400 |
Multiplatform TDOA correlation interferometer geolocation
A radio geolocation system is described in which a plurality of moving platforms such as aircraft concurrently receive a signal from a remote transmitter and the geolocation of the transmitter is...
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7433652 |
Electro-magnetic propagation modeling
A generalized framework is disclosed in which a wide variety of propagation models can be cast in a matrix-based format using arbitrary matrix coefficients. Casting propagation models in the...
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7429951 |
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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7427952 |
Augmentation of commercial wireless location system (WLS) with moving and/or airborne sensors for enhanced location accuracy and use of real-time overhead imagery for identification of wireless device locations
Mobile LMUs can be used in a Wireless Location System to provide detection coverage in areas lacking adequate receiver coverage. The mobile LMUs can be used to detect the radio frequency (RF)...
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7424402 |
System and method for making synchronized signal measurements at spaced apart locations
A system and method is disclosed which allows for the simultaneous capturing of signals at a plurality of diverse locations. In one embodiment, all transmissions received at each location are...
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7423589 |
Method for localising at least one emitter
The invention relates to a method of localization of one or more sources, said source or sources being in motion relative to a network of sensors, the method comprising a step of separation of the...
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7421212 |
Detecting and locating pulses using a Bragg cell
Detecting a pulse of a signal includes receiving the signal and a light beam. The signal drives a spatial light modulator to modulate the light beam, where the complex amplitude of the modulated...
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7420510 |
Location and tracking of people with combined use of RF infrastructure and dead reckoning modules
A system for tracking persons and other assets in a structure, having a multi-function tracking tag and a network of fixed RF receivers forming a gateway array. The location of the person being...
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7411551 |
System and method for asynchronous wireless positioning by ordered transmission
Disclosed is a wireless positioning system and method that can perform a high-precision position tracking. The wireless positioning system includes a target device that is an object of wireless...
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7411548 |
Reference beacon identification using transmission sequence characteristics
A method and apparatus for encoding information in a reference beacon signal for use in a time-difference-of-arrival/frequency-difference-of-arrival (TDOA/FDOA) geolocation system. Information is...
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7406320 |
Method and system for location estimation in wireless networks
A system and method for locating a wireless device in one or more wireless networks within a selected geographic region. The method includes generating a computer model of a selected geographic...
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7382286 |
System and method for the correlation of multiple data feeds
A method of receiving a first set of target data points from a first data feed and receiving a second set of target data points from a second data feed arrangement. Comparing a time variable...
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7379744 |
Positioning system, positioning method, and positioning server
To provide a positioning system, a positioning method, and a positioning server, which are capable of improving accuracy in detection of a position. In a positioning system, three or more access...
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7375683 |
Use of geo-stationary satellites to augment wide— area multilateration synchronization
The present invention improves WAMLAT Timing Availability by using timing from one or more of a variety of sources. These sources include unaugmented SATNAV timing, from GPS or/and GALILEO, GEO...
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7363126 |
Core area territory planning for optimizing driver familiarity and route flexibility
Route planning methods for use by a package delivery service provider are disclosed that satisfy a stochastic daily demand while taking advantage of drivers' route familiarity over time. A model...
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7339523 |
Navigation system using radio frequency tags
A method of determining a location is provided. The method comprises placing a plurality of radio frequency (RF) tags within an area, mapping the placement of the plurality of RF tags within the...
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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,...
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7295159 |
Method for measuring time of arrival of signals in a communications network
A method for measuring the Time Of Arrival of signals in a communications network is provided. A transmitter emits a beacon that is a digital message of known content, followed by timing...
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7292189 |
Methods and apparatus for high resolution positioning
The invention relates to a method of signal analysis that determines the location of a transmitter and to devices that implement the method. The method includes receiving by at least three...
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