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| Number | Title | Issue Date |
| 7359713 | Battery consumption optimization for mobile users Systems and methods are disclosed to provide power management for a mobile communication device having a location determination function. The frequency of the location determination function may be adjusted based on whether the mobile communication device is moving ... | 04/15/2008 |
| 7355545 | Through the wall ranging with triangulation using multiple spaced apart radars A plurality of multi-tone CW radars are used to generate a swath of ranges to a moving object or individual behind a wall or building structure in which the overlap of the range swaths from spaced-apart radars determines the location of the moving object or individu... | 04/08/2008 |
| 7302267 | Apparatus and method for estimating a velocity of a mobile terminal in a mobile communication system A Base Station (BS) apparatus for estimating a velocity of a Mobile Station (MS) in a mobile communication system includes a channel estimator for performing channel estimation according to a velocity band, receiving a wireless channel signal from the MS, and perfor... | 11/27/2007 |
| 7257483 | Method and apparatus for determining the position of an underwater object in real-time A method and apparatus is disclosed for providing a determined position in real-time of an underwater object using a plurality of sensors operating at various sampling rates and for using the determined position in real-time in order to perform inspection tasks inte... | 08/14/2007 |
| 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 alignment biases. The filter time reference is updated to produce esti... | 07/24/2007 |
| 7212149 | System, method and computer program product for detecting and tracking a moving ground target having a single phase center antenna A synthetic aperture radar (SAR) system having a single phase center antenna is provided, the SAR system including a measurement unit and a tracker unit. The measurement unit is capable of receiving a phase history of a target point scatterer. From the phase history... | 05/01/2007 |
| 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 detector is coupled to receive residuals representing the difference betw... | 03/06/2007 |
| 7164737 | Method for estimating doppler frequency Disclosed is a method for estimating a Doppler frequency with phase information, thereby estimating a maximum Doppler frequency. The method for estimating the Doppler frequency includes the steps of measuring phases of phase samples from a plurality of slots of a re... | 01/16/2007 |
| 7132975 | Apparatus and method for detecting moving objects An ultra wideband radar system for detecting moving objects comprising an antenna, which may be scanned in at least one dimension, and a signal processor wherein the signal processor includes a scan combiner that combines scan information in accordance with a candid... | 11/07/2006 |
| 7061995 | Apparatus and method to generate an adaptive slicer threshold for binary data An adaptive slicer threshold generation system includes a first moving average filter to determine a first average value of a first binary signal. A second moving average filter is included to determine a second average value of a second binary signal. A combiner co... | 06/13/2006 |
| 6940448 | Method and device for ascertaining the imminence of an unavoidable collision A method and a device for ascertaining the imminence of an unavoidable collision of a vehicle with an object, all locations within a determinable prediction time interval being predetermined as a function of the maximum possible longitudinal acceleration and lateral... | 09/06/2005 |
| 6621447 | Method and apparatus for controlling alarms in an automobile information system A method and apparatus for detecting a radar signal is disclosed. The method includes counting pulses emanating from an engine of a motor vehicle. An operating mode is determined in response to a moving average of pulses counted. An alarm signal is transm... | 09/16/2003 |
| 6594577 | Traveling support information processing system A traveling support information processing unit which can prevent willful assessment of information by a device installed on a road or loaded in a vehicle and makes it possible for the device to always issue a demand for acquisition of required informatio... | 07/15/2003 |
| 6591180 | Method and control system for distance and speed control of a vehicle In a method for controlling the distance and/or the speed of a following vehicle running behind a leading vehicle, the distance between the following vehicle and leading vehicle is measured, and the speeds of the following vehicle and of the leading vehic... | 07/08/2003 |
| 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 tag 201 from the detector and for triggering an alarm 401 if a dete... | 06/10/2003 |
| 6538599 | Noncoherent gain enhancement technique for non-stationary targets A radar system and radar processing method includes a number of aspects for providing improved function. The system and method may employ one or more of the following aspects: timely range-velocity (range-Doppler) compensation for target nonstationarity b... | 03/25/2003 |
| 6446005 | Magnetic wheel sensor for vehicle navigation system A system is disclosed for determining precise locations of the golf carts on a golf course in real time as the carts are in use during play of the course. Each cart is outfitted with a dead reckoning navigation (DRN) system for determining speed and direc... | 09/03/2002 |
| 6437729 | Integrator for radar return signals with high acceleration uncertainty A radar signal processing method and system for detecting target objects of unknown acceleration and having low SNRs which reduces the computational burdens and provides a more efficient way of performing the operation of non-coherent integration. Radar s... | 08/20/2002 |
| 6380882 | Motion detector based on the doppler principle A motion detector based on the Doppler principle contains a microwave module for emitting a microwave signal containing at least two frequencies into a room under surveillance and for receiving the radiation reflected from the latter. An evaluation stage ... | 04/30/2002 |
| 6313785 | Dual detection processing for detecting signals with high acceleration uncertainty Dual path detection processing in which a low SNR signal processor detects signals over a limited range of low acceleration values and a high SNR signal processor detects signals over a wider range of acceleration values. The low SNR signal processor uses... | 11/06/2001 |
| 6239738 | Signal processing method in a motor vehicle radar system and radar system therefor A signal-processing method for a motor-vehicle radar arrangement is specified, which method provides more extensive information on the traffic situation in observation direction by evaluating echo signals deflected at the road surface.... | 05/29/2001 |
| 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 |
| 5999890 | Velocity calculating apparatus A velocity calculating apparatus includes an acceleration sensor for detecting acceleration in the direction in which a motor vehicle travels. The acceleration sensor is connected to a CPU through an A/D converter. The CPU is connected to a GPS-signal rec... | 12/07/1999 |
| 5798727 | Obstacle recognition system for vehicle In an obstacle recognition system for a vehicle, transmission wave is irradiated per given angle for recognizing an obstacle ahead of the subject vehicle based on angle/distance data obtained from received reflected wave. A position of the obstacle is est... | 08/25/1998 |
| 5784026 | Radar detection of accelerating airborne targets Radar detection of accelerating airborne targets in accordance with the present invention utilizing a sequence of velocity, acceleration matched filters. This system includes a transmitter generating a signal oscillating at a predetermined frequency contr... | 07/21/1998 |
| 5708438 | Angular velocity calculating apparatus for navigation apparatus An angular velocity calculating apparatus which is low-priced and capable of obtaining an angular velocity with high accuracy is realized. Two velocity detectors which are substantially small in offset error, noise, or the like, unlike the conventionally ... | 01/13/1998 |
| 5621413 | Vehicle-ground surface measurement system A measurement device (103) and method determines various metrics between a vehicle (101) and a ground surface (105) using a transmitter-antenna (109) for emitting energy including a portion directed down toward the ground surface. A receiving antenna (115... | 04/15/1997 |
| 5113194 | Acceleration compensation by matched filtering A radar processor is described which performs acceleration compensation for accelerating targets. A set of matched filters is formed that compensates for each one of a predetermined set of target accelerations. The matched filters optimize the signal-to-n... | 05/12/1992 |
| 5016017 | Doppler radar speed detecting method and apparatus therefor A Doppler radar speed detecting method in which periods of a Doppler signal are measured within a predetermined sampling time, and frequency data corresponding to the thus obtained period data are obtained. Upper and lower limit values are set based on th... | 05/14/1991 |
| 4827263 | Pulse doppler radar system A method of preventing interference between `friendly` pulse doppler radars when in action against a common target or adjacents targets. Despite considerable separation of the radar r.f's the pulsed signals have repeated sideband pulses which may be taken... | 05/02/1989 |
| 4800386 | Method of and apparatus for counting objects A method of and apparatus for counting objects present within a predetermined area, by detecting acceleration and deceleration of the objects employ at least one Doppler radar to sense the movements of the objects by monitoring the Doppler frequencies of ... | 01/24/1989 |
| 4717915 | Method and apparatus for the graphic registration of moving vehicles Vehicles are measured and photographed from the direction in which they are travelling by a Doppler radar speed measuring device equipped with a camera. During a measuring stage after the vehicle enters the radar beam, a measured speed value is determined... | 01/05/1988 |
| 4692765 | Adaptive learning controller for synthetic aperture radar An adaptive learning controller (ALC) for use with an inertial navigation system (INS). To correct quadratic position errors which result from acceleration bias errors, the ALC produces a position correction signal. The position correction signal is gener... | 09/08/1987 |
| 4675822 | Doppler-inertial data loop for navigation system Accurate vehicle pitch and roll can be computed from a corresponding signal loop which receives inertial data input contaminated by the effects of gravity on a vehicle. Data from Doppler radar is compared to the inertial data and an error signal dependent... | 06/23/1987 |
| 4414548 | Doppler speed sensing apparatus A vehicle velocity sensing system is disclosed which includes a doppler velocity sensor (10, 12) and means for reducing spurious signal components in the output of the sensor. An accelerometer (30, 32) is mounted so as to sense vehicle accelerations along... | 11/08/1983 |
| 4188630 | Method of and system for avoiding collisions between aircraft To avoid collision between aircraft flying in the same general area, each aircraft has individually assigned to it a transmission interval or time slot for sending out data relating to its altitude, course and speed, successive time slots being distinguis... | 02/12/1980 |
| 4179696 | Kalman estimator tracking system A radar tracking system having a Kalman estimator is disclosed. The estimator is provided with angle and range track error measurements in a coordinate system that is aligned with and normal to the antenna line of sight, commonly referred to as the LOS co... | 12/18/1979 |
| 4148029 | System for estimating acceleration of maneuvering targets A radar system of the type utilizing an optimal estimator to process raw range and angle track data for driving a radar antenna, where the tracking computations, range rate, and angular rate of the range vector are utilized in estimating the target veloci... | 04/03/1979 |
| 4138677 | Acceleration filter for slowdown discrimination A circuit for determining the acceleration of an object being tracked by a oppler radar wherein a part of the received signal is delayed and then subtracted from the received signal to produce a first signal; a portion of the delayed signal is further dela... | 02/06/1979 |
| 4128837 | Prediction computation for weapon control In an airborne armament fire control prediction computer, apparatus for computing smoothed inertial velocity and acceleration components of an observed target in a three-dimensional Cartesian coordinate system. A target tracking sensor mechanization is pr... | 12/05/1978 |
