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8179319 |
Adaptive optimization of estimation of the angle of arrival of a signal received by an array of antenna elements
A parameter of interest of a signal, such as the angle of arrival of a target signal received by an antenna system having an array of antenna elements, is estimated by (a) obtaining disparate...
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8144057 |
Methods and apparatus for adaptively determining angles of arrival of signals
A technique for determining the angles of arrival of signals incident on an antenna array from directions within an angular region of interest involves supplying outputs of antenna elements of the...
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8138974 |
Location estimation system, method and program
A location estimation method using label propagation. The achieved location estimation method is robust to variations in radio signal strengths and is highly accurate by using the q-norm (0
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8130147 |
Signal wave arrival angle measuring device
A signal wave arrival angle measuring device includes: an observation data vector generation section generating an observation data vector necessary for an angle measurement of a signal wave from...
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8125388 |
Method for calibrating an AOA location system for all frequencies in a frequency hopping signal
A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in...
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8098155 |
System and method for locating a target wireless device
A method for locating a target wireless device is disclosed. At least one directional antenna is swept through a field of view at each of a plurality of sensing locations. A position is determined...
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8081106 |
Target ranging using information from two objects
In an embodiment, an apparatus includes a detector, direction finder, receiver, and range finder. The detector is operable to detect a target, and the direction finder is operable to determine a...
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8063771 |
Marine personal locator apparatus
Marine personal locator system including personal transmitters activated by immersion and a receiver. The transmitter includes a microprocessor adapted to effect transmission of a unique tone...
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8035562 |
Digital beam-forming apparatus and technique for a multi-beam global positioning system (GPS) receiver
An advanced multiple-beam GPS receiving system is achieved that is capable of simultaneously tracking multiple GPS satellites independently, detecting multiple interference signals individually,...
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8004463 |
Systems and methods for determining direction-of-arrival
The disclosed system and method for determining direction-of-arrival generally includes an antenna element and a processor. The antenna element may configured to generate a signal in response to an...
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7990314 |
Method and system for locating a geographical position using broadcast frequency modulation signals
A method and system for locating and positioning using broadcast frequency modulation (FM) signals, is provided. One implementation involves receiving FM stereo signals from three FM stations at...
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7982670 |
Method and system for estimating directions-of-arrival in low power or low sample size scenarios
The present invention relates to a method and a system for determining the direction of arrival of one or multiple radio or acoustic waves and, more particularly, to such a method and system...
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7973715 |
Determining a direction of arrival of signals incident to a tripole sensor
A system to determine a direction of arrival of each of a plurality of constituent signals of a superimposed wave includes a tripole radio antenna, a sampling unit, a frequency determining unit, an...
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7969360 |
High resolution, arbitrary-even-order direction finding method and device
Method of high-resolution direction finding to an arbitrary even order, 2q (q>2), for an array comprising N narrowband antennas each receiving the contribution from P sources characterized in that...
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7948438 |
Determining the angle of arrival of a target signal received by an array of antenna elements
In a system for determining the angle of arrival of a target signal received by an array of antenna elements, a receiver obtains observations of a received target signal from an array of antenna...
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7940215 |
Adaptive antenna radio communication device
An adaptive antenna radio communication device comprises a divided band direction estimating unit for estimating the direction by calculating the cross correlations between a pilot signal and...
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7912449 |
Method and system for 60 GHz location determination and coordination of WLAN/WPAN/GPS multimode devices
Within a local region, information may be communicated between two or more wireless multimode communication devices (WMCD) comprising 60 GHz band and lower frequency band wireless interfaces....
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7876264 |
Method of source number estimation and its application in method of direction of arrival estimation
The present invention provides a method of source number estimation based on eigenspace in DOA estimation, including: (1) obtaining signals received by uniform linear array; (2) calculating a...
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7847733 |
Direction-of-arrival estimating device and program
An arriving direction estimating device for estimating the arriving direction of an arriving wave with high accuracy and at high speed by using a sensor array. The arriving direction estimating...
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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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7822141 |
Multiple input, multiple output communications systems
Embodiments of the present invention include systems and methods for optimizing the transmitter and receiver weights of a MIMO system. In one embodiment, the weights are optimized to create and...
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7804449 |
Method for angle of arrival determination on frequency hopping air interfaces
A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in...
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7791537 |
Radio monitoring apparatus and method
Disclosed is radio monitoring apparatus which includes a radio station distinction unit, a direction measurement unit, a transmission source location estimation unit and a transmission source...
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7787989 |
Method for controlling an autonomous mobile robot and related device
The invention concerns a navigation device for a mobile robot comprising means for measuring the amplitude and the phase of an electromagnetic signal emitted by a wire acting as limit for a working...
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7764217 |
Surface RF emitter passive ranging accuracy confirmation algorithm
Kalman gain is used to calculate range accuracy for a passive angle-of-arrival determining systems, most notably for short-baseline interferometry, in which Kalman gain after arriving at a minimum...
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7750849 |
Method and arrangement for determining the spatial frequency of a signal
A method and arrangement for finding the direction to an emitter source by determining the spatial frequency of a signal received from the source in a sensor panel and comparing the spatial...
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7724693 |
Network dependent signal processing
A system processes signals exchanged between a near end terminal and a far end terminal over a communication path. The system selects the processing characteristics of a near end terminal based on...
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7724680 |
Method and technique for the processing and intelligent display of wideband direction-finding data
An interactive graphical user interface (GUI) for displaying frequency, amplitude and direction information provided by an intelligence system is provided comprising: a plot of RF versus amplitude,...
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7720644 |
Method and apparatus of spectral estimation
A spectrum of a set of samples from a data stream of sampled data is estimated until a targeted signal to noise ratio is achieved.
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7705780 |
Electronic support measures (ESM) tracking system and method
An ES tracker for tracking an emitter target, including ships and airborne targets, includes a sensor for receiving a signal emitted by the target; a sensor processor for processing the signal and...
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7663549 |
Incoming direction estimation apparatus
An incoming direction estimation apparatus estimates an incoming direction of a radar wave using three or more sensors or antennas simultaneously. An arithmetic expression for estimating an...
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7579988 |
Method, device and system for determining direction of arrival of signal
A method, device and system for determining a DOA of a signal are described. Determination of the DOA of the signal may include receiving first and second UWB waveforms of the signal at one or more...
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7538727 |
System and method for determining the bearing of a source location from a receiver location
The system comprises a first beatable signal source, a second beatable signal source, a phase reference signal source and a receiver. The first beatable signal source and the second beatable signal...
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7539273 |
Method for separating interfering signals and computing arrival angles
A method is disclosed for processing all types of received, interfering radio frequency signals corrupted by noise to extract the individual signals without having any a priori knowledge about...
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7532154 |
Frequency modulation radar device
The frequency modulation radar device includes a transmitting unit (5), M receiving units for receiving a reflected signal as M channels, a mixing unit (7) for mixing the transmitting signal with...
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7528774 |
Apparatus for measuring azimuth by using phase difference and method of using the same
An azimuth measurement apparatus including: a positioning signal receiver receiving a first impulse positioning signal and a second impulse positioning signal from a first fixed position and a...
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7501959 |
Signal incoming direction estimation apparatus
A signal incoming direction estimation apparatus is constructed so as to comprise a sensor array having plural sensors and the impedance of each of the sensors being set to a predetermined value,...
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7492810 |
Method and apparatus for segmented code correlation
A method and an apparatus is disclosed for efficient cross correlation of a plurality of signal vectors. Incoming data is partitioned into several segments and processed according to an algorithm...
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7453399 |
Antenna processing method for potentially non-centered cyclostationary signals
An antenna processing method for centered or potentially non-centered cyclostationary signals, comprises at least one step in which one or more nth order estimators are obtained from r-order...
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7436358 |
Signal arrival direction deducing device, signal arrival direction deducing method, and signal direction deducing program
A signal arrival direction deducing device capable of deducing the signal arrival direction even when a correlation matrix between input signals and noise correlation matrix are singular. A state...
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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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7414580 |
Method and corresponding device for joint signal detection and direction of arrival estimation
A method and corresponding device for joint signal detection and direction of arrival estimation, based on the ability to identify both the existence and direction of arrival of a required signal...
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7409227 |
Radio apparatus
The invention relates to a radio apparatus for estimating a direction from which a received wave arrives and forming a radio transmission channel between a transmitting end of the received wave and...
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7409226 |
Use of doppler direction finding to improve signal link performance in a wireless communication environment
A rotating antenna is used in a wireless system to impart a phase onto a received signal by electronically moving the effective receiving antenna location along a circular path such that the...
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7405696 |
Method for calibrating and AOA location system for frequency hopping air interfaces
A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in...
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7395084 |
Dynamic antenna allocation system
A communication system with an antenna array having a respective antenna for each of a multitude of communication modules and a control system which seiectiyely reassigns communication over a first...
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7379020 |
Apparatus and method for estimating direction of arrival of radio wave
A radio wave direction-of-arrival estimation apparatus and method that can estimate, at high speed and with good accuracy, the direction of arrival of a plurality of incoming waves having high...
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7379019 |
Method for angle of arrival determination on frequency hopping air interfaces
A method for calibrating an antenna and signal processing system enabling angle of arrival (AOA) determination for a frequency hopping signal, in which a calibration coefficient is determined in...
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7372404 |
Apparatus for estimating direction of arrival wave
Apparatus and method are disclosed for estimating direction of an arrival wave, such as radio or acoustic waves. A correlation matrix of an arrival wave is computed, and matrices for obtaining...
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7333056 |
Adaptive antenna radio communication device
An adaptive antenna radio communication device comprises a divided band direction estimating unit (4) for estimating the direction by calculating the cross correlations between a pilot signal and...
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