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7616526 |
Determination of time difference of arrival in distributed sensor networks
An object localizing system comprises sensor devices at different sites, each sensor device being capable of detecting a signal from an object, and control means for repeatedly responding to the...
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7605747 |
Method for compensating for the positional errors of a sensor
A method for determining or compensating for the positional errors of a sensor tracking a target comprises the steps of operating the sensor to generate sensed information relating to the target...
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7605746 |
In-vehicle radar device
An in-vehicle radar device has a transmission section for emitting an electromagnetic wave, a scanning section for horizontally scanning the electromagnetic wave emitted by the transmission...
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7602329 |
Systems and methods of tracking and/or avoiding harm to certain devices or humans
The present invention relates to systems and methods of tracking and/or avoiding harm to certain devices or humans. According to one exemplary embodiment, a method of tracking individual assets may...
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7586436 |
Radar device
A radar device separates directions of a plurality of targets, obtained from combinations of antenna beams, with a high accuracy. The radar device includes: a direction calculating unit for...
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7576688 |
Method and arrangement for detecting moving objects with a radar
Moving objects are detected with a radar by collecting samples of a received signal over an integration period. The terms of a match function contain a product of a sample of said received signal...
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7576682 |
Method and system for radar target detection and angle estimation in the presence of jamming
A method for radar target detection and angle estimation in the presence of jamming includes the steps of receiving a signal from a radar array having elements arranged in rows and columns;...
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7573419 |
Method and system for unambiguous angle resolution of a sparse wide-band antenna array
The present inventive concept for bistatic or monostatic radar utilization discloses a method and a system for unambiguous angle resolution of a sparse wide-band array antenna by utilizing an ultra...
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7570193 |
Detecting and recognizing long duration waveforms
A method and apparatus for processing signal pulses received by a device to identify the presence or absence of a waveform is provided. The waveform may have a long duration and may have a sparse...
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7567203 |
Classification system for radar and sonar applications
A system and method for target classification for an aircraft surveillance radar is provided. In one implementation, the track classifier provides tracks with an updated probability value based on...
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7554485 |
Radar sensor and method for distance and cruise control
A radar sensor and a corresponding method for distance and cruise control of a vehicle are described; using this sensor and method, objects in front of the vehicle in the direction of travel are...
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7551122 |
Radar level gauge system and method providing a signal indicative of process reliability
A method for determination of a filling level of a product contained in a tank, comprising the steps of generating and transmitting an electromagnetic signal; propagating the transmitted...
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7545307 |
Target recognition system and method with unknown target rejection
The present invention describes a new QR enclosing voting scheme that allows the extraction of base signatures of objects using a shortest path QR algorithm, providing a probability distribution...
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7538715 |
Electromagnetic location and display system and method
An unknown location for a transmitter/receiver is determined using a calibration process. An area is established with reference receivers at known locations and a mobile transmitter provides a...
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7522091 |
Road curvature estimation system
A processor using a first Kalman filter estimates a host vehicle state from speed and yaw rate, the latter of which may be from a yaw rate sensor if speed is greater than a threshold, and, if less,...
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7522089 |
Airborne look-down doppler radar tracking of hovering helicopters using rotor features
A system and method is presented for detecting and classifying slow-moving and hovering helicopters from a missile's look-down Doppler radar that is compatible with the existing base of Doppler...
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7515094 |
Advanced electromagnetic location of electronic equipment
An apparatus for measuring at least one of unintentional and intentional electromagnetic emissions for at least one of enabling electromagnetic location of predetermined electronic equipment giving...
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7515088 |
Weather radar detection system and method that is adaptive to weather characteristics
A method of detecting weather on an aircraft uses a weather radar system. The method includes determining a classification of weather and automatically adjusting the weather radar system in...
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7511654 |
Systems and methods for mine detection
Systems, methods, and devices for detecting land mines and unexploded ordnance are disclosed. A first embodiment may be construed as a method that includes: inserting an antenna into the ground;...
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7504986 |
Blind spot sensor system
A blind spot sensor system detects and/or classifies objects in a defined monitoring region of a motor vehicle. The blind spot sensor system contains a first device for emitting a first radar beam,...
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7498968 |
Synthetic aperture design for increased SAR image rate
High resolution SAR images of a target scene at near video rates can be produced by using overlapped, but nevertheless, full-size synthetic apertures. The SAR images, which respectively correspond...
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7460056 |
Multi purpose radar surveillance system
The invention discloses a radar system ( 100 ) for the detection of low RCS-objects ( 110, 140, 150, 160, 190 ) such as forest fires, said system comprising a first plurality of stations ( 120 )...
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7450068 |
Phased array antenna beam tracking with difference patterns
A system and method for using a phased array antenna to concurrently receive an RF signal transmitted by a remote transmitter, to determine the angular location of the remote transmitter using the...
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7450052 |
Object detection method and apparatus
Method and apparatus for detecting objects. In one embodiment, a person entering a secured zone is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected...
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7414570 |
System and method for adaptive broadcast radar system
An adaptive broadcast radar system for tracking targets is disclosed. The radar system includes a transmitter having sub-apertures and a receiver having sub-apertures. The transmitter sub-apertures...
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7411543 |
Maximum-likelihood rocket identifier
A sensor suite determines location and velocity information relating to a missile threat, which is converted to missile or rocket state estimates. The state estimates are transformed into...
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7411539 |
Method for detecting the presence of radar signal emitters, an electronic support measures unit and a system for determining the position and identity of said emitters
A method for passively detecting the presence of radar signal emitters, in which an ESM unit receives radar signals with a number of antennas, each antenna covering a sector of the surrounding...
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7382312 |
Syntactic target classifier
Disclosed is a Syntactic Landmine Detector. The syntactic landmine detector processes a received signal from a ground penetrating RADAR which contains at least one spatial sequence, the spatial...
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7375679 |
Reduced state estimation with biased and out-of-sequence measurements from multiple sensors
This invention relates to state estimation after processing time-delayed measurements with unknown biases that may vary arbitrarily in time within known physical bounds. These biased measurements...
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7375675 |
Method and system for multiple target class data recording, processing and display for over-the-horizon radar
A method and apparatus are disclosed that enable an over-the-horizon-radar (OTHR) system to detect and track multiple target classes simultaneously, where target classes are defined by the speed...
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7352321 |
Determining statistical descriptors of a signal from a set of its samples
An entity is subjected to an interrogating signal, and the reflection from the entity is repeatedly sampled to obtain a first set of values each dependent on the intensity of the reflected signal....
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7345621 |
Real-time multistatic radar signal processing system and method
A real-time signal processing engine robustly detects, localizes, tracks and classifies ground targets based on radar signals from a multistatic radar system. The system differentiates between...
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7339516 |
Method to provide graphical representation of Sense Through The Wall (STTW) targets
A method to present easily understood images that represent targets that are detected through walls or other opaque barriers is disclosed. This method is particularly well suited for...
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7333047 |
System and method for spatially diverse radar signal processing
An ultra wideband radar system for detecting objects where at least one of the radar system or the object is moving. The radar may be scanned in at least one dimension, which may include angle or...
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7327307 |
Radar system with adaptive waveform processing and methods for adaptively controlling the shape of a radar ambiguity function
An adaptive waveform radar system transmits a selected waveform of a family of related waveforms and either phase shifts or bit shifts the radar return signal for correlating with the other...
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7317416 |
Skeletal topography imaging radar for unique individual identification
A system for identifying an individual, including an imaging radar for receiving radar data pertaining to at least a portion of a skeleton of at least one individual, an imaging module for...
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7301495 |
Interrupt SAR implementation for range migration (RMA) processing
A moving radar ( 405 ) generates a synthetic aperture image from an incomplete sequence of periodic pulse returns. The incomplete sequence of periodic pulse returns has one or more missing pulses....
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7298314 |
Near field electromagnetic positioning system and method
A system and method for electromagnetic position determination utilizing a calibration process. For calibration, a transmitter is positioned at multiple locations in an area of interest and...
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7295149 |
Method for determining missile information from radar returns
A target missile identifier compares radar cross-section (RCS) information about the missile with a set including at least one template of RCS to make determination(s) of at least one of (a) the...
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7289060 |
Super high range resolution amplitude and range principal scatterer (SHARP) classifier
A radar classifies an unknown target illuminated with a large bandwidth pulse. The large bandwidth pulse may be algorithmically synthesized. The target reflects the large bandwidth pulse to form a...
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7277047 |
Reduced state estimation with biased measurements
This invention relates to sate estimation after processing measurements with unknown biases that may vary arbitrarily in time within known physical bounds. These biased measurements are obtained...
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7259714 |
Unique space time adaptive system (USS)
A method of detecting radar returns and measuring their parameters with or without clutter present and no clutter cancellation employed which includes transmitting at least one pulse; processing...
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7248207 |
System and method for sidelobe reduction using point spread function expansion
Systems and methods for detecting targets using pulse-compressed radar signals are disclosed. In one application, relatively small targets that are masked by the time-sidelobes of a larger target's...
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7248206 |
Instantaneous multisensor angular bias autoregistration
Unknown alignment biases of sensors of a tracking system are estimated by an iterative Kalman filter method. Current measurements are corrected for known alignment errors and previously estimated...
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7236121 |
Pattern classifier and method for associating tracks from different sensors
An interceptor-based sensor clusters tracks of objects to generate track clusters based on an uncertainty associated with each track, and generates feature vectors for a cluster under test using...
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7221307 |
Determination of the presence of closely spaced targets
An active or passive sensor observes a region, and generates evidence of the type of target or object viewed. The evidence is processed to determine the prior probability that the object is of a...
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7218270 |
ATR trajectory tracking system (A-Track)
A-Track is a tracking process that is driven by automatic target recognition techniques (ATR), mobility analysis using digital maps and exploitation of other constraining information. It is...
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7205927 |
Technique for low grazing angle 3D SAR target recognition
A radar on a moving platform for three dimensional target recognition of a target on a flat or sloping terrain is described. The target is illuminated from a plurality of locations to generate...
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7193557 |
Random set-based cluster tracking
Tracking objects by receiving a dataframe from a detection sensor device, the dataframe containing a timestamp and data corresponding to each detected object, generating new observation nodes for...
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7193555 |
System and method for detecting emitter signals in the presence of unwanted signals
A method for receiving at least one signal emitted by at least one emitter includes defining a first dwell associated with a first signal. The first dwell has a frequency range that overlaps at...
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