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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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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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7545312 |
Target detection device and its detection method
This invention relates to a target detection device and its detection method, comprising: a transmitting unit for transmitting a detecting pulse to detect target which then reflects the detecting...
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7545311 |
Method and system for predicting air-to-surface target missile
A method and system for predicting a trajectory of an air-to-surface target missile is provided, including detecting a plurality of echo wave signals from the target missile through a plurality of...
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7522094 |
Method and system for radar tracking of moving target from moving station
A method and system is proposed for use by a moving station (such as a jetfighter) for radar tracking of a moving target (such as an air-to-air missile). The proposed method and system involves the...
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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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7508336 |
Single scan track initiation for radars having rotating, electronically scanned antennas
A method and radar system for detecting a target and verifying its presence to begin tracking and to enable future detections of the same target to be correctly associated with its initial...
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7508335 |
Multiple sensor processing
A method of multiple sensor processing includes receiving, at a first sensor system, track data from a second sensor system, comparing track data from the first sensor system to the track data from...
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7474255 |
Target tracking method of radar with frequency modulated continuous wave
The present invention relates to a target tracking method of radar with frequency modulated continuous wave, which transmits a transmitted signal to receive a return wave of the transmitted signal...
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7466261 |
Method and system for radio detection and ranging intrusion detection system
A RADAR system including a set of RADAR apparatuses is disclosed. Each apparatus includes a processor, a pulse unit in signal communication with the processor, a waveform signal generator in signal...
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7439900 |
Radar system with resampling features
Disclosed is a radar system which comprises an AD conversion unit for converting an analog signal obtained from an antenna into a digital signal, a frequency analysis unit for performing a...
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7425693 |
Spectral tracking
A method of tracking a target. The method includes the steps of acquiring a first spectral image of a scene that includes the target, designating a spectral reference window, in the first spectral...
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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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7391355 |
Single platform geolocation method and apparatus
A geolocation system and method uses a single platform for determining a Doppler measurement set of a targeted aircraft or signal of interest. The electronic warfare aircraft and the ejected...
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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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7333052 |
Signal processing with reduced combinational complexity
Signal processing with reduced combinatorial complexity for tracking evolving phenomena such as radar tracks associated with weighted measurement parameters includes selecting a current phenomenon...
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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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7324041 |
Method for solving two RF signals' angular position
A method for determining an angle for each of two RF signals at different frequencies and offset from each other. The average angle of a composite signal is obtained from the two RF signals over a...
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7317417 |
Methods for detection and tracking of targets
The present invention relates to active sensor applications, and more particularly is directed to efficient systems and methods for detection and tracking of one or more targets. The invention...
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7274324 |
Apparatus and method of tracking objects in flight
A path in three-dimensions for an object in flight is determined according to a radar signal reflected by the object. The radar signal is transmitted at an offset angle from horizontal sufficient...
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7256729 |
Method for the observation of a number of objects
The invention relates to a method for the observation of a number of objects, which move in a space monitored by a number of sensors, are recorded by the sensors and followed with continuous...
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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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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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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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7187320 |
Matched maneuver detector
A target tracking arrangement predicts the state of a target. The predictor may be a Kalman filter. In the presence of a target which is maneuvering, the prediction may be in error. A maneuver...
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7170443 |
Method for the evaluation of radar data for fully automatic creation of a map of regions with interference
A method for the evaluation of radar data for fully automatic creation of a map of regions with interference, in which undesirable reflections frequently occur includes the following method steps....
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7161529 |
Dual forward scattering method for modeling multipath propagation
Analysis of electromagnetic (or acoustic) multipath propagation inventively focuses upon the transmitter-to-target propagation (transmitted propagation reaching target via both direct pathway and...
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7079991 |
Maneuvering target tracking method via modifying the interacting multiple model (IMM) and the interacting acceleration compensation (IAC) algorithms
The present invention relates to the field of target tracking and more generally to a method employing improved algorithms, which achieve excellent tracking performance for a high-g maneuvering...
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7071867 |
Method, apparatus, and computer program product for radar detection of moving target
Methods, apparatus, and computer program products are provided for tracking at least one moving target with a radar device without requiring the use of Doppler information. The invention comprises...
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7046190 |
Process for phase-derived range measurements
A method and apparatus for determining range of a radar target is provided. Signal samples based on returns of a target during tracking are processed to produce a wideband envelope range estimate...
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7046188 |
System and method for tracking beam-aspect targets with combined Kalman and particle filters
Systems and methods of tracking a beam-aspect target are provided. In embodiments, a target is tracked with a Kalman filter while detections are received. After a detection is missed, the Kalman...
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7030809 |
Multiple model radar tracking filter and systems and methods employing same
A multiple model (MM) radar tracking filter which controls the weighting applied to outputs of first and second model functions responsive to non-Markovian switching logic, includes the first and...
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7026981 |
Surface interaction region methodology for delimiting multipath propagation inquiry
Analysis of electromagnetic (or acoustic) multipath propagation inventively confines the assessment of multipath propagation to a “surface interactive region” (“SIR”), intermediate the...
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7026980 |
Missile identification and tracking system and method
Sensors determine the kinematic measurements of a boosting missile, and the information is applied to a plurality of pairs or sets of filters, one of which is matched to the characteristics of a...
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7026979 |
Method and apparatus for joint kinematic and feature tracking using probabilistic argumentation
A method, apparatus, and computer program product for joint kinematic and feature tracking are presented. Kinematic measurements and feature/class measurements regarding an object are received from...
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6999601 |
Method for visual tracking using switching linear dynamic systems models
A target in a sequence of measurements is tracked by modeling the target with a switching linear dynamic system (SLDS) having a plurality of dynamic models. Each dynamic model is associated with a...
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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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6982667 |
Method for target-tracking of objects
A geographical region having an object to be tracked is divided into subregions, where adjacent disposed subregions partial overlap one another and the overlapping portions of adjacently disposed...
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6959103 |
Displacement sensor having a display data output
Provided is a displacement sensor which allows at least part of the data used from the time of obtaining an image until the time of computing the displacement can be readily verified. In a...
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6888493 |
Multi-targets detection method applied in particular to surveillance radars with multi-beamforming in elevation
A radar comprising transmitter means for generating bursts of radar pulses, each scan of a radar consisting of a number (N b ) of bursts, the method comprises, for each scan k:
a first step,...
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6864831 |
Radar detection method and apparatus
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative...
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6856272 |
Methods and apparatus for detecting threats in different areas
Methods and apparatus for early detection and identification of a threat such as individuals carrying hidden explosive materials, land mines on roads, etc. are disclosed. Methods comprise...
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6801156 |
Frequency-agile monopulse technique for resolving closely spaced targets
A monopulse radar system generates elevation and azimuth difference monopulse estimates of the location of targets in each range cell, where the target may be either a single or plural target, each...
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6771205 |
Shipboard point defense system and elements therefor
A combined defense and navigational system on a naval vessel is disclosed. The disclosed system includes a track-while-scan pulse radar which is controlled to provide either navigational...
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6750806 |
Method of tracking a target and target tracking system
A method of tracking a target ( 2 ) moving in an airspace and a target tracking system ( 10 ) for performing the method are described. A search sensor ( 12 ) searches a search space at a first...
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6694044 |
Method for motion classification using switching linear dynamic system models
Portions of an input measurement sequence are classified into a plurality of regimes by associating each of a plurality of dynamic models with one a switching state such that a model is selected...
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6687606 |
Architecture for automatic evaluation of team reconnaissance and surveillance plans
A method analyzes a plan for scanning the content of a predetermined area. The method includes the steps of: providing a plan for at least one entity ( 200 ), the plan including a route and a set...
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6683968 |
Method for visual tracking using switching linear dynamic system models
A target in a sequence of measurements is tracked by modeling the target with a switching linear dynamic system (SLDS) having a plurality of dynamic models. Each dynamic model is associated with a...
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6591146 |
Method for learning switching linear dynamic system models from data
From a set of possible switching states and responsive to a sequence of measurements, a corresponding sequence of switching states is determined for a system having a plurality of dynamic models,...
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6577238 |
RFID detection system
A system 100 is disclosed for monitoring the position of one or more RFID tags 201 . The system has a detector 301 incorporating circuitry 304 for detecting changes in the range of an RFID...
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