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| Number | Title | Issue Date |
| 7302241 | Wireless receiver without AGC A wireless communication unit (300) incorporates a receiver comprising radio frequency circuitry (210, 220, 230, 240) for receiving a radio frequency signal and converting the radio frequency signal to a low frequency signal. A signal level adjustment circuit receiv... | 11/27/2007 |
| 7124427 | Method and apparatus for surveillance using an image server Methods and apparatus for an image server surveillance system provide for as control and coordination of cameras that may be widely deployed, analyzing data from multiple cameras, making data available in such a way that it can be efficiently transmitted over a netw... | 10/17/2006 |
| 7106244 | Freight container monitoring system A system and a method for monitoring a freight container are provided. The method includes the steps of generating a resonant spectrum representative of an initial condition of internal surfaces and contents of the freight container, and saving the resonant spectrum... | 09/12/2006 |
| 7038612 | Method for SAR processing without INS data A Synthetic Aperture Radar (SAR) avoids the need for an INS/GPS by focusing a SAR image having discernible features and a center. The image is formed from digitized returns, each of the digitized returns having a phase and an amplitude. The focusing steps of an algo... | 05/02/2006 |
| 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 |
| 6911931 | Using dynamic interferometric synthetic aperature radar (InSAR) to image fast-moving surface waves A new differential technique and system for imaging dynamic (fast moving) surface waves using Dynamic Interferometric Synthetic Aperture Radar (InSAR) is introduced. This differential technique and system can sample the fast-moving surface displacement waves from a ... | 06/28/2005 |
| 6911933 | Dynamic logic algorithm used for detecting slow-moving or concealed targets in synthetic aperture radar (SAR) images The present invention includes an application of a dynamic logic algorithm to detect slow moving targets. Show moving targets are going to be moving in the range from 0-5 mph. This could encompass troop movements and vehicles or convoys under rough terrain. The meth... | 06/28/2005 |
| 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 |
| 6864828 | Method and apparatus for collection and processing of interferometric synthetic aperture radar data A system and method provide for the collection of interferometric synthetic aperture radar (IFSAR) data. In the system, a first space vehicle configured for emitting electro-magnetic energy and collecting the reflection from a region of interest (ROI), may be direct... | 03/08/2005 |
| 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 |
| 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 |
| 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 |
| 6811291 | Detector for signals with harmonically related components A processor that utilizes the presence of harmonic components in a noisy signal environment to enhance the desired frequency spectrum of the signal. Received signal and noise are filtered to separate the harmonic components of the signal. These harmonic components a... | 11/02/2004 |
| 6738009 | System and method for synthetic aperture radar mapping a ground strip having extended range swath A system and method for mapping a ground strip having an extended range swath includes a synthetic aperture radar (SAR) mounted on a moving platform. The ground strip is divided into columns that extend from the near-range edge of the ground strip. Each column conta... | 05/18/2004 |
| 6734819 | Level measuring device operating with microwaves The microwave measuring device, which preferably operates with microwave bursts, serves to produce a measured value (XH) representing the level of the contents of a vessel (200). It comprises a transceiver unit (2) for generating a level-dep... | 05/11/2004 |
| 6714157 | Multiple time-interleaved radar operation using a single radar at different angles A pulse radar system capable of mapping multiple targets essentially simultaneously using a single radar antenna. By alternately transmitting radar pulses toward multiple targets positioned at different angles relative to the antenna and alternately receiving return... | 03/30/2004 |
| 6707415 | Method and system for generating weather and ground reflectivity information A method, system, and computer program product for storing weather radar return data into a three-dimensional buffer. The system includes a radar system that transmits a radar signal and generates a radar measurement as a result of radar return of the transmitted ra... | 03/16/2004 |
| 6677884 | Satellite configuration for interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR) For interferometric and/or tomographic remote sensing by means of synthetic aperture radar (SAR) one to N receiver satellites and/or transmitter satellites and/or transceiver satellites with a horizontal across-track shift the same or differing in amplitu... | 01/13/2004 |
| 6661368 | Control of reflected electromagnetic fields at an IFSAR antenna A system for reducing multi-path reflections from adjacent metal objects which cause distortion in an IFSAR includes a reflective cone extending between the top of the IFSAR and the skin of its aircraft, and a reflective shroud surrounding the IFSAR. Each... | 12/09/2003 |
| 6650274 | Radar imaging system and method An imaging system and method. The invention provides an intra-pulse repetition interval (PRI) agile beam technique for enhanced resolution that can be used at aspect angles near the velocity vector of a host vehicle. It is particularly useful at small sca... | 11/18/2003 |
| 6621448 | Non-contact radar system for reconstruction of scenes obscured under snow and similar material A system and method for imaging objects obscured by a covering layer of snow. The system preferably utilizes a continuous-wave radar generating short-wavelength radio-frequency (RF) signal beam-scanned over angular displacements following a scanning patte... | 09/16/2003 |
| 6614386 | Bistatic radar system using transmitters in mid-earth orbit A bistatic radar system and method. In the illustrative embodiment, a receiver is positioned in a horizontal plane. A transmitter is then positioned in Middle Earth Orbit at a position that is nearly vertical to the plane of the receiver. This configurati... | 09/02/2003 |
| 6501413 | Timing and control and data acquisition for a multi transducer ground penetrating radar system A multi-channel digital equivalent time sampling (MDETS) device having a programmable logic control that can select, delay or create various triggered signals. The MDETS can function independently or with multiple devices allowing for synchronized acquisi... | 12/31/2002 |
| 6489920 | Method for detecting a vehicle traffic status and system for detecting said traffic status From a body located at a distance above the surface of the earth, an image is recorded of a region that is located underneath the body on or above the surface of the earth and that has a diameter of at least one kilometer. The recorded image is fully geoc... | 12/03/2002 |
| 6441772 | SAR radar system The present invention relates to a radar system which comprises a platform which moves over a number of objects. The number of objects can be very large and the objects can appear in the form of, for example, a ground surface. The platform supports radar ... | 08/27/2002 |
| 6377201 | Radar and method therefor A radar (300) comprises a transceiver (302) for transmitting pulses directed to a subsurface area of interest (102) and for receiving a reflected wave (210) from the subsurface area of interest. The pulses have a pulse duration and amplitude constrained b... | 04/23/2002 |
| 6342852 | Radar video display and recording device The present invention relates to a radar video display and recording device, which can simultaneously display radar video signals of the whole and designated areas in the polar coordinates and Cartesian coordinates, respectively, and can store the radar v... | 01/29/2002 |
| 6259396 | Target acquisition system and radon transform based method for target azimuth aspect estimation A Radon transform based method that provides for target azimuth aspect estimation and target shape measurement. A Radon transform is applied to a binary (N×N pixels) target chip to extract target features that are then used to measure length, width, and ... | 07/10/2001 |
| 6208283 | Synthetic aperture radar system and platform position measuring apparatus used in the same A synthetic aperture radar system fluctuation compensating apparatus includes a synthetic aperture radar mounted on a flying unit, a data acquiring unit, a position measuring unit and a position determining unit. The data acquiring unit receives a recepti... | 03/27/2001 |
| 6204800 | Method for monitoring the earth surface The invention relates to a method for monitoring the earth's surface with a moving aircraft using a radar sensor with a synthetic aperture. In order to produce high resolution radar images, the flight parameters of the aircraft are also required. Accordin... | 03/20/2001 |
| 6150972 | Process for combining multiple passes of interferometric SAR data Interferometric synthetic aperture radar (IFSAR) is a promising technology for a wide variety of military and civilian elevation modeling requirements. IFSAR extends traditional two dimensional SAR processing to three dimensions by utilizing the phase dif... | 11/21/2000 |
| 6130641 | Imaging methods and apparatus using model-based array signal processing An apparatus and method for imaging uses a transducer array which receives a scattered signal from a region of interest. The method analyses the scattered signal on the basis of a model which assumes several independent point scatterers at each range. The... | 10/10/2000 |
| 6107953 | Minimum-gradient-path phase unwrapping A method of phase unwrapping is described along with an efficient UNIX/C implementation. From selected reference or starting points in a phase-wrapped image, the phase gradients with respect to the nearest neighbors of the starting pixels whose correlatio... | 08/22/2000 |
| 6097333 | Method for range measurement and contour detection by means of microwaves A method provides for contactless measurement of the range between a transceiver unit for microwaves in the frequency band from 1 to 100 GHz and an object to be investigated using a pulse principle. The microwaves are focused onto the surface by an antenn... | 08/01/2000 |
| 6037893 | Enhanced motion compensation technique in synthetic aperture radar systems Compensating for motion of the host vehicle in a synthetic aperture radar system includes collecting inertial data with an inertial navigation system during an imaging period in which a synthetic aperture radar pulse is directed to a target. During the im... | 03/14/2000 |
| 5805099 | Synthetic aperture radar and target image production method A synthetic aperture radar apparatus which analyzes Doppler frequency displacements arising from a range direction motion component of a target and motion components of a flying body to produce a motion target image wherein only azimuth direction motion c... | 09/08/1998 |
| 5765166 | Use of symmetric multiprocessors for multiple hypothesis tracking A parallel processing approach for use in multiple hypothesis tracking applications that provides partitioning and load balancing to achieve greater processing efficiency. The present invention comprises a plurality of processors that are each coupled to ... | 06/09/1998 |
| 4992797 | Method of detection and identification of one or more remote objects A method of identifying and detecting remote objects by transmitting wave energy and receiving wave energy reflected from the object. Separate signal parameters pertaining to the wave energy received are processed forming a measured signature of the objec... | 02/12/1991 |
| 4990925 | Interferometric radiometer A radiometer (100) uses the fringe pattern of an interferometer (110) to scan a scene to produce a time record from which a high-resolution radio frequency, or other radiation, distribution of the scene can be reconstructed. A matched filter (120), or oth... | 02/05/1991 |
| 4929953 | Method and apparatus for continuous on line recording and processing of synthetic aperture radar signals in real time A method and apparatus for real time SAR recording and processing includes a first movable recording medium in the form of a rotatable disc having reusable and erasable photosensitive materials thereon to record SAR returns in the form of radial traces. T... | 05/29/1990 |
