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| Number | Title | Issue Date |
| 7026976 | Radar apparatus having function of estimating target's width In a radar apparatus, when the width of a target cannot be determined, the width is estimated in such a manner as not to erroneously identify the lane in which the target is traveling. Denoting the actual width of the target by D, the distance to the target by R, an... | 04/11/2006 |
| 7023376 | Radar apparatus The invention provides a radar that transmits a radio wave and receives an echo of the radio wave, which is characterized by possessing (1) a reception means that detects a beat signal of the echo and the radio wave, (2) a first frequency analysis mean... | 04/04/2006 |
| 7023378 | Self-calibrating wideband phase continuous synthesizer and associated methods The synthesizer and method provide a relatively wideband swept frequency signal and include generating a first swept frequency signal with a first generator, and successively switching between different frequency signals with a second generator. Such switching creat... | 04/04/2006 |
| 7019683 | Shipping container security system A security system senses intrusions into a shipping container through the opening of doors, cutting an opening, or removing the doors from their hinges. Intrusion information is transmitted to a remote receiver without interrogation, thereby reducing power consumpti... | 03/28/2006 |
| RE39038 | Method and apparatus for alerting an operator of a motor vehicle to an incoming radar signal A radar detector for alerting an operator of a motor vehicle to an incoming police radar signal. This radar detector includes a microprocessor; a circuit coupled to the microprocessor for detecting the incoming police radar signal; and a global positioning system re... | 03/28/2006 |
| 7019681 | System and method for verifying the radar signature of an aircraft The invention is a system and method for verifying the radar signature of a pair of aircraft. The system includes a radar transmitter and receivers located in the leading and trailing edge of the wing at the wing tip of the aircraft such that when flying the aircraf... | 03/28/2006 |
| 7015855 | Creating and identifying synthetic aperture radar images having tilt angle diversity An apparatus for and method of employing synthetic aperture radar (SAR) images to automatically classify a target comprising emitting and collecting SAR signals at a plurality of squint angles, forming a plurality of SAR images of the target from the collected signa... | 03/21/2006 |
| 7015857 | Calibrating an antenna by determining polarization Calibrating an antenna includes receiving a signal sent from a reference located within a region. The signal has a polarization within an expected polarization range. Polarization value sets are established in accordance with the expected polarization range. Polariz... | 03/21/2006 |
| 7010075 | Sampling system A sampling system includes a first sampler which periodically samples an input signal at a fixed sampling period T to output a sequence of samples. A first lowpass filter outputs a sequence of −T/4 phase shifted samples from the sequence of samples. A second lowpa... | 03/07/2006 |
| 7010286 | Apparatus, system, and method for down-converting and up-converting electromagnetic signals Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive o... | 03/07/2006 |
| 7009554 | Reduced state estimation with multisensor fusion and out-of-sequence measurements This invention relates to state estimation after processing measurements with time delays from multiple sensors of systems characterized by state variables and by multidimensional parameters, for which the latter are unknown and may vary arbitrarily in time within k... | 03/07/2006 |
| 7006031 | Interrupt SAR image restoration using linear prediction and Range Migration Algorithm (RMA) processing SAR images are improved by a method for acquiring a synthetic aperture image from a sequence of periodic pulse returns where the sequence of periodic pulse returns is interspersed with interrupts, i.e. missing pulses. The interrupts mark the start and end of one or ... | 02/28/2006 |
| 7006034 | Fast and slow time scale clutter cancellation Target detection in the presence of non stationary clutter is improved by a radar receiver on a moving platform for detecting a target using a plurality of short coherent arrays and a plurality of long coherent arrays synthesized from the short coherent arrays overl... | 02/28/2006 |
| 7006474 | Channelized receiver system A channelizing receiver is provided with a plurality of channel receivers for monitoring respective segments of a frequency band being monitored by the channelizing receiver. Each channel receiver includes a channel processor for detecting an electromagnetic signal,... | 02/28/2006 |
| 7006805 | Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service A receiver having multi-mode and multi-band functionality and capabilities is described herein. The receiver is capable of selectively operating over a plurality of bands and channels. The receiver operates in a plurality of modes, including but not limited to a sin... | 02/28/2006 |
| 7002509 | Method and system for emitter identification using transmission signatures A Method and System for Emitter Identification Using Transmission Signatures is disclosed. Also disclosed is a system that is able to take in the undemodulated IF of the receiver and perform identification algorithms on that data. The system is further able to perfo... | 02/21/2006 |
| 7002511 | Millimeter wave pulsed radar system A millimeter wave pulsed radar system includes a radar synthesizer having a voltage controlled oscillator/phase locked loop (VCO/PLL) circuit, direct digital synthesizer (DDS) circuit and quadrature modulator circuit that are operative to generate an intermediate fr... | 02/21/2006 |
| 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 in the detection of debris pieces and the association of the Doppler... | 02/07/2006 |
| 6995706 | Method and an arrangement in a radar level gauging system A method, an arrangement and a radar level gauging system for preventing interference, which radar level gauging system comprises at least two radar level gauges arranged to measure a filling level of a product kept in a container. Microwave pulses are transmitted t... | 02/07/2006 |
| 6992613 | Object detecting device An object detecting device is provided whereby the number and size of detected objects can be determined without making the construction of the device more complex and the cost of components higher. The object detecting device includes multiple transmitter-receivers... | 01/31/2006 |
| 6989780 | System and method for receiver resource allocation and verification 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. However, it is possible that the scan strategy is not realizable because of capacity constraints within the re... | 01/24/2006 |
| 6989782 | Ultra-wideband radar system using sub-band coded pulses Methods and apparatus are provided for radar systems using multiple pulses that are shorter than the expected range delay extent of the target to be imaged. In one implementation, a method for performing radar includes the steps of: transmitting a plurality of pulse... | 01/24/2006 |
| 6987479 | Conformal range migration algorithm (CRMA) “KARMA” Motion compensation for coherent combination of pulses facilitates a SAR image of a scene on earth's surface. A great circle (406) is centered with respect to the earth's center, The great circle (406) has an axis (412) perpendicular to a first ... | 01/17/2006 |
| 6985103 | Passive airborne collision warning device and method A passive airborne mounted collision warning system suitable for light aircraft that enables an observer aircraft to determine the position of a nearby transponder-equipped target aircraft. The transponder-equipped target aircraft transmits replies responsive to int... | 01/10/2006 |
| 6985102 | Method and system for deinterleaving A method of deinterleaving parameter descriptor word (PDW) data includes parallel scoring of pulses in an a posteriori search for associating of pulses based on proximity within a multi-parameter problem space. The a posteriori search includes scoring an oldest puls... | 01/10/2006 |
| 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 subregions share common states. A transition matrix is used to represe... | 01/03/2006 |
| 6980151 | System and method for onboard detection of ballistic threats to aircraft A bi-static continuous wave radar system and related methods for detecting incoming threats from ballistic projectiles includes a remote source of RF illumination, and a local receiver installed in one or more target aircraft. A first receiving channel acquires dire... | 12/27/2005 |
| 6978966 | Reflector deployment error estimation A system and method for performing in-orbit alignment calibration using on-board attitude sensors to improve reflector alignment after deployment to improve spacecraft pointing. ... | 12/27/2005 |
| 6977610 | Multiple radar combining for increased range, radar sensitivity and angle accuracy A mechanism for combining signals of multiple radars to achieve increased range, radar sensitivity and angle accuracy is provided. A first signal beam is radiated from an antenna of a first radar in the direction of a target. A second signal beam is radiated from an... | 12/20/2005 |
| 6977609 | Technique for changing a range gate and radar coverage 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... | 12/20/2005 |
| 6972714 | Optically-augmented microwave imaging system and method An imaging system includes an optical (visible-light or near IR) imaging system and a microwave imaging system. The optical imaging system captures an optical image of the object, produces optical image data representing the optical image and extracts optical image ... | 12/06/2005 |
| 6970129 | Radar apparatus, and program therefor Provided is a radar apparatus capable of continuously and stably making a detection of a target even if a reflected wave from a target already detected falls into obscurity due to the presence of low-frequency noises or reflected waves from other targets. An estimat... | 11/29/2005 |
| 6970128 | Motion compensated synthetic aperture imaging system and methods for imaging A see-through-the-wall (STTW) imaging system uses a plurality of geographically separated positioning transmitters to transmit non-interfering positioning signals. An imaging unit generates a synthetic aperture image of a target by compensating for complex movement ... | 11/29/2005 |
| 6967616 | Systems and methods for correlation in an air traffic control system of interrogation-based target positional data and GPS-based intruder positional data An improved system and methods for correlating an interrogation-based air traffic surveillance intruder, such as an Traffic alert and Collision Avoidance System (TCAS) intruder, and a GPS-based air traffic surveillance target, such as an Automatic Dependent Surveill... | 11/22/2005 |
| 6967612 | System and method for standoff detection of human carried explosives The system and method for standoff detection of human carried explosives (HCE) is a portable system that automatically detects HCE up to a range of 200 meters and within seconds alerts an operator to HCE threats. The system has radar only, or both radar and video se... | 11/22/2005 |
| 6967613 | Broadband waveform reconstruction for radar Resolution of a radar operating within a bandwidth is improved by defining a quantity of substantially rectangular sub-band filters to subdivide the bandwidth in the frequency domain into the quantity of sequential sub-bands having a sub-bandwidth. Each signal sent ... | 11/22/2005 |
| 6967617 | Polarization correlation signal processing for radiometers, ladars, and radars A correlating polarimeter is provided for correlating a received waveform of a wideband electromagnetic signal with a predetermined waveform. The correlating polarimeter may include a first antenna for receiving an electromagnetic signal and a modulator interconnect... | 11/22/2005 |
| 6965340 | System and method for security inspection using microwave imaging A security inspection system uses microwave radiation to image targets on a human subject or other item. The system includes an array of antenna elements that are programmable with a respective phase delay to direct a beam of microwave illumination toward a target o... | 11/15/2005 |
| 6965341 | High resolution SAR processing using stepped-frequency chirp waveform A stepped-frequency chirped waveform improves SAR groundmapping for the following reasons. Range resolution in SAR image is inversely proportional to the transmitted signal bandwidth in nominal SAR systems. Since there is a limit in the transmitted bandwidth that ca... | 11/15/2005 |
| 6961016 | Estimating an antenna pointing error by determining polarization Estimating an antenna pointing error includes receiving a signal sent from a reference located within a region. A polarization ratio is evaluated over the region. A minimum polarization ratio variance for the polarization ratio is established. A location correspondi... | 11/01/2005 |
