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| Number | Title | Issue Date |
| 6900753 | Method for measuring distance and position using spread spectrum signal, and an equipment using the method By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation section 105, the first threshold value timing detection section 103 selects onl... | 05/31/2005 |
| 6900754 | Signal processing method for use with scanning radar A method that can locate the center of a target even when the target is a large vehicle, and that, when a plurality of beams are reflected, determines whether the reflected beams are from the same target or not, wherein, of peaks generated based on a radar signal re... | 05/31/2005 |
| 6897802 | Fusion of shape and multiscale features for unknown target rejection A plurality of image chips (202) (over 100), each of the chips containing the same, known target of interest, such as, for example an M109 tank are presented to the system for training. Each image chip of the known target is slightly different than the next, ... | 05/24/2005 |
| 6897804 | Methods and apparatus for determination of a filter center frequency A method for calculating a center frequency and a bandwidth for a radar doppler filter is herein described. The center frequency and bandwidth are calculated to provide radar performance over varying terrain and aircraft altitude, pitch, and roll. The method include... | 05/24/2005 |
| 6894634 | System and method for detecting emitter signals A system and method is provided for detecting emitter signals and for determining a scan strategy for a receiver system that receives such emitter signals. Data is provided that specifies one or more emitters or emitter types desired for detection. An algorithm eval... | 05/17/2005 |
| 6894641 | Radar system mounted on vehicle To provide a radar system mounted on a vehicle that reliably detects the reception of the interference wave with high-performance and inexpensively. There is provided a radar system mounted on a vehicle for detecting a target object, including a transmitter for tran... | 05/17/2005 |
| 6894635 | System and method for correction of discontinuities in an antenna model A system and method is provided for detecting emitter signals and for determining a scan strategy for a receiver system that receives such emitter signals. When revisit times are computed for each receiver detecting method for an emitter, these revisit times may not... | 05/17/2005 |
| 6894638 | Radar signal processing unit and radar signal processing method for abnormal signal extraction A radar signal processing unit comprises a Fourier transform section 1 for executing Fourier transform of the received signal to a frequency signal, a frequency domain power calculation section 2 for calculating a power spectrum of electric power for e... | 05/17/2005 |
| 6894639 | Generalized hebbian learning for principal component analysis and automatic target recognition, systems and method This application discloses a method for distinguishing targets from clutter, comprising the steps inputting data, calculating data statistics from said data and using said data statistics to select target specific feature information to distinguish specific targets ... | 05/17/2005 |
| 6891497 | Chirp-based method and apparatus for performing phase calibration across phased array antenna A chirp-based method and apparatus measures phase variation through a reference frequency transport cable for a phased array antenna. A chirp is injected into the a signal transport path from a remote transmit/receive portion of the antenna, so that the chirp is con... | 05/10/2005 |
| 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 (Nb) of bursts, the method comprises, for each scan k: a first step, in which a radar cell is pre-se... | 05/03/2005 |
| 6882304 | Device for a radar system A device for a radar system, the device being supplied with the received signals of at least two receiving antennas as input signals, and in which the output signals of this device are supplied to at least one unit for evaluating the received signals which includes ... | 04/19/2005 |
| 6879280 | Vertical weather profile display system and method An aircraft weather radar system is disclosed. The system comprises a radar antenna, aircraft sensors, and a database. The system also comprises a processing device receiving information from the radar antenna and from the aircraft sensors and able to retrieve infor... | 04/12/2005 |
| 6876321 | Pulse descriptor word collector A pulse descriptor word (PDW) collector, including an extractor coupled to a computer, for passively collecting radio frequency (RF) data received by an electronic surveillance system (ESS). It is integrated into the ESS after a receiver (which converts RF pulse dat... | 04/05/2005 |
| 6873285 | Method and system for providing along-track alignment and formatting of synthetic aperture radar (SAR) data, and SAR image formation algorithms using such method and system An along-track alignment and formatting system (ATAFS) formats synthetic aperture radar (SAR) data to align and format signals from scatterers in a scene to achieve an ideal data format in the along-track dimension in which such ideal data format leads to improved i... | 03/29/2005 |
| 6873287 | Signal processing arrangement The present invention relates to a method and an arrangement suitable for embedded signal processing, comprising a number of computational units (100), each computational unit comprising a number of processing elements (20) capable of working independe... | 03/29/2005 |
| 6873284 | System and method for non-maximum dwell duration selection for use in detecting emitter signals A system and method is provided for detecting emitter signals and for determining a scan strategy for a receiver system that receives such emitter signals. Typically, the minimum dwell duration of a dwell is the maximum pulse repetition interval (PRI) of the emitter... | 03/29/2005 |
| 6870500 | Side looking SAR system A synthetic aperture radar (SAR) processes radar has a transmit aperture and a receive aperture that is of a different size from the transmit aperture. The receive aperture is separated from the transmit aperture and is divided into a number of receive sub-apertures... | 03/22/2005 |
| 6870502 | Advanced asynchronous pulse detector An asynchronous pulse detector including a data estimator which estimates the return signal based on the corrected return signal, a detector for detecting an asynchronous pulse in the return signal, and a selector for selectively outputting the estimated return sign... | 03/22/2005 |
| 6867729 | Guided wave radar level transmitter with automatic velocity compensation A guided wave radar transmitter comprises a probe defining a transmission line including a relatively low impedance target marker above an expected sensing region of the probe. A pulse circuit is connected to the probe for generating pulses on the transmission line ... | 03/15/2005 |
| 6867732 | Embedded multi-functional preprocessing input data buffer in radar system An embedded multi-functional preprocessing input data buffer comprises a clutter lock loop circuit, a multiplier, a mode selective multiplexer, a dual-port memory, an input multiplexer, self-testing circuit, decode circuit and an output multiplexer. The clutter lock... | 03/15/2005 |
| 6867728 | Methods and systems for identifying signals-of-interest Signals-of-interest are identified by distinguishing such signals from signals constituting environmental or internal receiver noise. A received signal is rapidly sampled in order to set a dynamic, system threshold. Signals above the threshold constitute signals-of-... | 03/15/2005 |
| 6867727 | Multiplatform multifunction avionics architecture A system-of-systems avionics architecture that is compatible with futuristic multi-function multi-platform sensor applications. The method and device of the invention is based on localized “adaptive” waveform and spectrum allocation for ultra-wideband radio freq... | 03/15/2005 |
| 6864827 | Digital intermediate frequency receiver module for use in airborne SAR applications A digital IF receiver (DRX) module directly compatible with advanced radar systems such as synthetic aperture radar (SAR) systems. The DRX can combine a 1 G-Sample/sec 8-bit ADC with high-speed digital signal processor, such as high gate-count FPGA technology or ASI... | 03/08/2005 |
| 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 of the FFT output signal indicates the presence of an object. The ran... | 03/08/2005 |
| 6864833 | Time-base generator with self-compensating control loop A time-base generator with a self-compensating control loop. The time-base generator is suitable for use in level measurement and time-of-flight ranging systems. The time-base generator includes a pulse generator stage, a delay stage, a control loop and a references... | 03/08/2005 |
| 6864834 | Radar system using random RF noise A radar system that utilizes predetermined, pseudorandom, or random waveforms that may be substantially matched to the impulse response of the radar and any surrounding clutter such that the signal-to-clutter ratio may be optimized and/or such that specific targets ... | 03/08/2005 |
| 6864826 | RADAR APPARATUS FOR IMAGING AND/OR SPECTROMETRIC ANALYSIS AND METHODS OF PERFORMING IMAGING AND/OR SPECTROMETRIC ANALYSIS OF A SUBSTANCE FOR DIMENSIONAL MEASUREMENT, IDENTIFICATION AND PRECISION RADAR MAPPING Radar apparatus and methods of use thereof for imaging and/or spectrometric analysis. The invention employs pulsed radar signals for magnifying, imaging, scale measuring, identifying and/or typecasting the composition of substances by radargrammetric imaging and/or ... | 03/08/2005 |
| 6861977 | Agile PRT deconvolution method and systems, and its uses This invention relates to radar signal processing. In particular, this invention concerns signal processing of agile Pulse Repetition Time (PRT) sampled signal transmitted using spread spectrum technique. This invention solves, in particular, the incompatibility bet... | 03/01/2005 |
| 6861973 | Method of storing data in radar used for vehicle Disclosed is a method of storing data for temporarily storing a plurality of detected data in a data buffer or the like included in a radar used for a vehicle. The radar detects signals reflected from a plurality of target objects so as to obtain a plurality of dete... | 03/01/2005 |
| 6861971 | Transponder having high phase stability, particularly for synthetic aperture radar, or sar, systems A transceiver or transponder particularly for synthetic aperture radar, or SAR, systems, operating in a frequency band having a central frequency, the transponder comprising a receiver (1) and a transmitter (2) both thermally stable and made by microst... | 03/01/2005 |
| 6861975 | Chirp-based method and apparatus for performing distributed network phase calibration across phased array antenna A chirp-based arrangement derives a measure of phase variation through a reference frequency transport cable of a phased array antenna architecture, such as a spaceborne synthetic aperture radar system. A direct digital synthesized chirp signal is injected in an ups... | 03/01/2005 |
| 6861976 | 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 generate and code a signal waveform. The signal waveform is coded wi... | 03/01/2005 |
| 6859164 | Detecting system In a position detecting system used to monitor a suspicious person and to give an alarm by using a radar which transmits/receives a microwave or a millimeterwave, the shape of a detectable area of the radar and that of the area to be monitored are not always equal t... | 02/22/2005 |
| 6856280 | Method and radar system for determining the directional angle of radar objects A method for determining the directional angle of radar objects using a multibeam radar, including the steps of: (a) recording the frequency spectra of the radar echoes for a plurality of beams; (b) seeking a measuring frequency near a freq... | 02/15/2005 |
| 6856278 | Radar A radar performs accurate and appropriate pairing even if peaks of approximately identical signal intensities or even if a plurality of peak groups having identical representative beam bearings exist in the frequency spectrum. First, the peak frequency of a peak whi... | 02/15/2005 |
| 6856276 | Multi-station HF FMCW radar frequency sharing with GPS time modulation multiplexing Systems and methods are described for HF radar frequency sharing with GPS time modulation multiplexing. A method is provided that includes generating clock signals from the time information contained in a GPS signal. Radio frequency signals are transmitted and recei... | 02/15/2005 |
| 6856271 | Signal processing for object detection system Methods and apparatus for detecting objects. In one embodiment, a person entering a secured or “Safe Zone™” is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected and measured. In... | 02/15/2005 |
| 6853332 | Automatic registration of images in digital terrain elevation data A method of registering reconnaissance image data with map data is disclosed, comprising recording image data at a plurality of positions, together with the role, pitch and height above mean sea level data from an airborne navigation system and imaging system, and r... | 02/08/2005 |
| 6853330 | Inverse precision velocity update for monopulse calibration A radar system derives a correction for an actual boresight (311) of a radar monopulse antenna mounted on a moving platform from Σ data and Δ data generated with respect to an a priori known, calibrated boresight (309). The monopulse antenna (602 | 02/08/2005 |
