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| Number | Title | Issue Date |
| 8049660 | Radar apparatus configured to suppress effects of grating lobes upon detection of direction of target based on phase difference between received reflected waves A radar apparatus has a plurality of receiving antennas and an array transmitting antenna controlled to successively vary the direction of a transmitted beam within a range which includes a target detection range of directions. The direction of any target within the... | 11/01/2011 |
| 7884756 | Radar apparatus A radar apparatus measures an azimuth angle with a calculation device that performs super-resolution angle measuring processing in which relative speeds and relative distances among target objects are calculated, when two azimuth angles are obtained for a given targ... | 02/08/2011 |
| 7859451 | Method and system for monopulse radar target angle determination A method for determining target angles based on data received from a monopulse radar array antenna includes receiving from a beamformer that generates beams from signals generated by the monopulse radar antenna signals having data indicative of a sum beam, an azimut... | 12/28/2010 |
| 7667638 | Detection and resolution of closely spaced targets in a monopulse system Systems and methods are provided for determining first and second azimuth angle values representing two closely spaced targets. Monopulse radar scan data is produced and processed to provide quadrature angle data, merged azimuth angle data, and a maximum magnitude o... | 02/23/2010 |
| 7548186 | Method and apparatus for detection of an electromagnetic signal reflected from and object For detection of an electromagnetic signal, which is transmitted from a transmitting antenna (1), by means of at least two at least essentially identical receiving antennas (3, 4), whose sensitivity curve has a maximum (M) with falling flanks as well a... | 06/16/2009 |
| 7417584 | Monopulse radar estimation of target altitude at low angles of elevation A monopulse radar operating at low angles of elevation (LOE) receives returns from a target by a direct path and by a path including a reflection from that portion of the Earth's surface lying between the radar and the target. The surface-reflected signal tends to c... | 08/26/2008 |
| 7372398 | Electronic target position control at millimeter wave for hardware-in-the-loop applications An apparatus for use in controlling a simulated target position in a millimeter wave, hardware-in-the-loop system includes a pair of horns and a conditioning circuit. The conditioning circuit is capable of generating a pair of output millimeter wave signals, each to... | 05/13/2008 |
| 7366544 | Mote networks having directional antennas A mote network having and/or using one or more directional antennas. ... | 04/29/2008 |
| 7339517 | Radar A radar wherein a first threshold value is determined in accordance with the intensity of background noise; second threshold values are set in a fixed frequency area around base portions of peaks in the frequency spectrum; the higher one of these second threshold va... | 03/04/2008 |
| 7330149 | Method for locating multiple angle sources using a monopulse radar A monopulse radar tracking method which analyzes boresight error information provided a monopulse radar to determine a location for two targets. The monopulse radar tracking method analyzes the boresight error information to determine an angle of arrival for a domin... | 02/12/2008 |
| 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 frequency difference period by averaging the frequency difference per... | 01/29/2008 |
| 7324025 | Non-integer interpolation using cascaded integrator-comb filter A non-integer CIC interpolation filter is provided for use in sigma-delta digital-to-analog systems, which realizes non-integer interpolation but eliminates the need for coupling of the integrators in the output domain. The present non-integer interpolation filter p... | 01/29/2008 |
| 7292179 | Instantaneous passive range finding A method and apparatus for use in determining the range in a single time sample from a platform to a target are disclosed. The method includes receiving radiation emanating from the target at two points on the platform in a common time sample; detecting the received... | 11/06/2007 |
| 7289058 | Radar apparatus The present invention relates to a radar apparatus that forms multiple digital beams based on reflected waves of a transmitted radio wave. A transmit signal is transmitted in a predetermined cycle from one of transmitting/receiving antennas A1 to A4 ar... | 10/30/2007 |
| 7274410 | Broadband integrated tuner A broadband integrated receiver for receiving input signals and outputting composite video and audio signals is disclosed. The receiver employs an up-conversion mixer and a down-conversion mixer in series to produce an intermediate signal. An intermediate filter bet... | 09/25/2007 |
| 7268724 | Reduced-error monopulse processor This monopulse processor provides target position information having an RMS error which is less than that of a conventional monopulse processor. A Σ±jΔ vs. Σ processor is modified to provide a position output signal equal to the smaller in absolute magnitude of ... | 09/11/2007 |
| 7268722 | Angular resolution antenna system For an angle-resolving antenna system, only two radar sensors are provided including separate transmitting and receiving antennas. The receiving antennas of the two radar sensors are switchable with reference to their main beam direction as well as to their beam wid... | 09/11/2007 |
| 7262729 | Radio detection and ranging intrusion detection system A radar system having a processor, a waveform generator, a plurality of antenna interfaces, a set of first antennas configured to transmit a waveform, and a set of second antennas configured to receive a reflected waveform is disclosed. The waveform generator and an... | 08/28/2007 |
| 7263386 | High gain omnidirectional antenna and related method An antenna system which is capable of having omnidirectional transmitting and receiving capabilities is disclosed. The antenna system includes a plurality of directional antennas coupled to a transceiver, wherein the antennas are configured to have their main lobes ... | 08/28/2007 |
| 7256734 | Spot beam antenna boresight calibration using GPS receivers A method and apparatus for calibrating such a spot beam antenna by use of scanned spot beam signal characteristics measured by a plurality of ground based navigation receivers is disclosed. ... | 08/14/2007 |
| 7250902 | Method of generating accurate estimates of azimuth and elevation angles of a target for a phased—phased array rotating radar A method and apparatus for generating accurate estimates of a radar target's azimuth and elevation angles for a phased-phased array rotating radar. Scan modulated coherently integrated (SMCI) monopulse curves are generated from a measured one-way transmit antenna pa... | 07/31/2007 |
| 7242345 | Method for controlling a radar antenna A method is described for detecting an object with target radar. After the first detection of an object, the antenna is tilted. The original direction towards the object is restored by electronically steering the emitted beam. The beamsteering is obtained by changin... | 07/10/2007 |
| 7242964 | Shaping of EM field for transmission to multiple terminals A method and apparatus for directing energy in a plurality of azimuth directions. The amount of energy directed in the azimuth direction of a mobile terminal is a function of the location and acceptable receive strength of at least two mobile terminals. The function... | 07/10/2007 |
| 7236125 | Method for reducing angular blur in radar pictures A method for reducing angular blur in radar pictures achieved in range bin based detection systems includes measuring a variable S(x, y) such as amplitude or power as a function of an angle x and a distance y. An expression: corrected angular position=angu... | 06/26/2007 |
| 7231308 | Test system dynamic range extension through compression compensation A method for extending dynamic range and a test system with extended dynamic range compensate for a compression effect on measured data caused by a receiver channel of the test system being compressed. The measured data is magnitude and phase data for one of a devic... | 06/12/2007 |
| 7230999 | Method for extended coherent data demodulation for GPS receivers A method of performing data detection for a global positioning system (GPS) receiver is disclosed. The method includes receiving a first in-phase (I) reference signal during a first time interval and receiving a first quadrature (Q) reference signal during a first t... | 06/12/2007 |
| 7227493 | Methods and apparatus for obtaining positional information An apparatus and method obtains positional information about one or more objects in a detection field. An array includes a transmitting element and a plurality of receiving elements. A truncated cross-correlation function may be applied to determine the interval bet... | 06/05/2007 |
| 7221318 | System and method for controlling antenna pattern A communication system and method for controlling an antenna pattern is disclosed. The communication system may be situated on a mobile station, a base station, or a combination thereof. The communication system comprises a smart antenna module, a speed sensor, and ... | 05/22/2007 |
| 7218272 | Reducing antenna boresight error Reducing antenna boresight error includes receiving radar pulses reflected from the ground, where pulses are emitted from the antenna of a radar system, reflected by the ground, and received by the antenna. The return pulses carry information about the ground. Measu... | 05/15/2007 |
| 7218268 | Self-calibrating interferometric synthetic aperture radar altimeter A synthetic aperture radar system uses RF bandwidth and Doppler beam sharpening principles to develop fine altitude and along-track resolutions. To achieve accurate cross-track position measurements the system and method exploit a combination of modes based on a nov... | 05/15/2007 |
| 7218273 | Method and device for boresighting an antenna on a moving platform using a moving target A technique for boresighting an antenna mounted on a moving platform is described. The technique uses a concurrently moving calibration target. Target navigation data and platform navigation data are used to compensate for movement of the target and the platform. Th... | 05/15/2007 |
| 7212152 | Monopulse radar system The present invention provides that a monopulse radar system to correct an amplitude error and a phase error developed between receiving channels and improve the accuracy of a detected angle. A part of a transmit signal is supplied to respective channels on the rece... | 05/01/2007 |
| 7212170 | Antenna beam steering via beam-deflecting lens and single-axis mechanical rotator An antenna beam steering apparatus and method comprising providing an antenna, employing a beam-deflecting lens through which energy passing from and to the antenna is deflected, and rotating the antenna with a single-axis rotator. ... | 05/01/2007 |
| 7212150 | Doppler-sensitive adaptive coherence estimate detector methods A method is provided for detecting a target signal of a specific known form in the presence of clutter. The method includes dividing a set of initial training data, derived from returns from a burst of identical pulses, into a set of censored data and a set of uncen... | 05/01/2007 |
| 7209840 | Systems and methods for providing remote monitoring of electricity consumption for an electric meter A system for providing remote monitoring of electricity consumption is provided. In one embodiment the system may comprise electric meters, communication devices having a unique address and defining a wireless communication network, and a site controller. Each elect... | 04/24/2007 |
| 7205932 | Method and apparatus for improved determination of range and angle of arrival utilizing a two tone CW radar An improved system is provided for aiming a shotgun-based or other countermeasure system so as to be able to countermeasure incoming rockets or projectiles. In one embodiment a shotgun aimed and controlled by the subject system projects a pattern of pellets to inter... | 04/17/2007 |
| 7203472 | Method and apparatus providing calibration technique for RF performance tuning A method is disclosed for operating a RF receiver of a communications equipment, as is circuitry for implementing the method. The method includes, while operating under the control of a data processor of the communications equipment, generating a calibration signal;... | 04/10/2007 |
| 7203462 | Antenna unit and radio base station therewith Phase and amplitude deviations, which are generated, for example, by cables connecting an array antenna of a CDMA base station and the base station, are calibrated in the baseband. The base station comprises: an antenna apparatus 1; couplers 2; ... | 04/10/2007 |
| 7190305 | Radar apparatus In a radar apparatus, a receiving antenna includes a plurality of antenna elements, each receiving, as a reception signal, radio waves emitted into space and reflected off a target object. An analog signal is obtained by downconverting and putting a bandwidth constr... | 03/13/2007 |
| 7173561 | Radar device capable of scanning received reflection waves The present invention relates to a radar device for forming multi-beams in multiple channels from reflected waves of a transmitted wave by using a minimum number of antennas. The device has: antennas used for both transmission and reception A1–A4; tr... | 02/06/2007 |
