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7616157 |
System and method for effectively performing enhanced mobile-device location procedures
A system and method for effectively performing enhanced device location procedures to determine the current physical location of a mobile device includes a plurality of satellites that wirelessly...
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7576694 |
Secure wireless user localization scheme using transmission range variation
A secure localization method for wireless networks utilizes access point variable transmission power capability to transmit encoded localization signals at different power levels to a wireless...
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7551137 |
Apparatus and method for tracing a path travelled by an entity or object, and tag for use therewith
Apparatus and method for tracing a geographical journey taken by an entity, for example an article (shipment), asset or person, on a worldwide map uses a miniature, passive, low power, radio...
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7532160 |
Distributed radio frequency ranging signal receiver for navigation or position determination
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...
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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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7515104 |
Structured array geolocation
Methods and systems for providing an improved geolocation of a plurality of transmitters are disclosed. In one embodiment, a method for providing a geolocation of a plurality of transmitters...
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7511667 |
Precise local positioning systems using ground-based transmitters
A precise positioning method and system is disclosed wherein at least one ground transmitter is used for transmitting a ranging signal with code modulation. The at least one ground transmitter is...
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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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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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7474265 |
Inter-network operation of multiple location networks
The present invention discloses a system and method for allowing a position receiver to determine position solutions from positioning signals from a plurality of autonomous positioning networks,...
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7471243 |
Location determination utilizing environmental factors
A method and apparatus for determining the geographic location of a user incorporates the sensing of a plurality of physical environmental parameters at the user's location. The parameter values...
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7468697 |
Self-surveying wideband ground transmitters
A precise positioning method and system is disclosed for allowing an array of ground transmitters to self-survey their relative location at centimeter-level accuracy by transmitting, amongst the...
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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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7411549 |
Calibration of a device location measurement system that utilizes wireless signal strengths
An architecture for minimizing calibration effort in an IEEE 802.11 device location measurement system. The calibration technique is based upon a regression function that produces adequately...
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7400974 |
Method and apparatus for locating position of a GPS device
A method and apparatus for locating position of a GPS device is described. In one example, a method for provisioning a mobile device with a model for determining a position of the mobile device in...
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7400890 |
Method for decision of time delay by repeater in mobile communication network
A method for determination of a repeater time delay in a mobile communication network, without affecting a correct positioning of a mobile terminal, is disclosed. The method includes the steps of...
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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...
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7388541 |
Self-calibrating position location using periodic codes in broadcast digital transmissions
A broadcast digital transmission (BDT) receiver, computer-readable media, and associated method for receiving and processing of BDT signals from a plurality of transmitters. A BDT receiver includes...
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7385554 |
Satellite and local system position determination
In a local positioning system, augmentation of the land-based system is provided by receiving signals from a GNSS. The signals from the land-based positioning system have a code phase accuracy...
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7382318 |
Land-based local ranging signal methods and systems
To provide sub-meter accuracy in a local positioning system, ranging signals with a high modulation rate of code, such as 30 MHz, or more are transmitted. Code phase measurements may be used to...
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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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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...
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7363043 |
Passive GSM-based self-locating device
A self locating device that uses GSM signals associated with GSM digital telephone base stations to determine its current location. The device uses GSM common channel signals to determine observed...
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7346345 |
Positioning in a telecommunications system
A telecommunications system comprises a first transmitter unit situated at a first, known location; a second transmitter unit situated at a second, unknown location; a first receiving unit at a...
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7342538 |
Asynchronous local position determination system and method
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...
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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...
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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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7317419 |
Self-calibrated path loss position estimation and zone of impact determination
A device and method are provided for estimating a position of a target device (e.g., a device emitting radio frequency energy) based on data pertaining to strength of an emission received from the...
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7312752 |
Wireless position location and tracking system
Techniques for accurate position location and tracking suitable for a wide range of facilities in variable environments are disclosed. In one aspect, a system for position location comprises a...
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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...
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7301498 |
Inserting measurements in a simplified geometric model to determine position of a device
The invention relates to a method and a system for determining the position of a device ( 1 ) by taking measurements to determine the range between at least a first positioning station ( 2 ) and...
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7295155 |
Satellite positioning apparatus and method
Available-satellite data indicating satellites available for satellite positioning is obtained from a GPS receiver, and satellites continuously available for satellite positioning in the current...
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7292188 |
Apparatus and method for CDMA time pseudolite for repeater identification
Apparatus and method for resolving repeater location ambiguities in a CDMA network using a CDMA Time Pseudolite. The CDMA Time Pseudolite includes a CDMA receiver to receive a CDMA signal with an...
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7277054 |
Method for positioning, a positioning system, and an electronic device
A method for positioning a wireless communication device where position data of one or a plurality of reference points is stored into at least one data base, and which of the reference points is...
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7277052 |
Method for the multistatic detection and locating of a mobile craft through the use of digital broadcasting transmitters
A method to detect and/or locate a mobile craft in a reception system making use of transmitters of opportunity, whose signal comprises elements enabling the synchronization of the receiver,...
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7233288 |
Receiver for a position-finding system with improved sensitivity
A receiver ( 1 ) of a position-finding system comprises a calculation unit ( 6, 7, 8 ) for calculation of a statistical value (Λ) on the basis of a received signal, and a detector unit ( 9 ) for...
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7205939 |
Land-based transmitter position determination
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...
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7205930 |
Instantaneous 3—D target location resolution utilizing only bistatic range measurement in a multistatic system
A multistatic radar has a radar transmitter for illuminating a target with a radar signal. The target reflects the radar signal to three separate radar receivers, each performing a bistatic range...
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7132981 |
Method of locating object using phase differences among multiple frequency beacons transmitted from spaced apart transmitter sites
A technique for geolocating (mobile) objects within an environment where other locating systems, such as GPS-based systems, may not be expected to operate successfully, uses at least three...
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7126536 |
Position location using terrestrial digital video broadcast television signals
A method and computer program product for determining the position of a user terminal includes receiving at the user terminal a plurality of digital television (DTV) broadcast signals from a...
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7116991 |
Method of determining the position of a mobile station in a mobile telecommunication network
The present invention concerns a method of determining the position of a mobile station in a mobile telecommunication network, the said network including a plurality of base stations designed to...
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7113130 |
Method and system for determining location by implication
Systems and methods for determining location by implication are described. A responsive environment includes a location determination method that operates in an area that is only partially...
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7106251 |
Receiver in a position-finding system and method for position-finding with increased sensitivity
The invention relates to a receiver in a position-finding system, having a calculation unit for calculating a statistical value from a received signal, and a detector unit for comparing the...
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7061429 |
Device for determining the position and/or orientation of a creature relative to an environment
A device for determining the position and/or orientation of a creature ( 3 ) relative to an environment, comprising a locating member ( 4 ) connected to the creature ( 3 ), the locating member...
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7042396 |
Position location using digital audio broadcast signals
A method, apparatus, and computer-readable media for determining the position of a user terminal comprises receiving, at the user terminal, a digital audio broadcast signal; and determining a...
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7035650 |
System and method for providing directions
A method for providing directions includes receiving at a server, from at least one fixed wireless communication device, information identifying a current location of a portable communication...
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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...
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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...
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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...
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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...
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