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| Number | Title | Issue Date |
| 8081105 | Method for measuring the radial velocity of a target with a doppler radar An embodiment of the invention includes a step of transmitting an OFDM waveform including several frequency carrier signals transmitted simultaneously, the frequency carrier signals being coded in order to improve the Doppler response. An embodiment of the invention... | 12/20/2011 |
| 7928897 | Target detection method for use in radar and radar device using the target detection method A radar device includes a transmission antenna and a reception antenna having a plurality of antenna elements. The radar device switches the antenna elements in synchronization with a modulation cycle, thereby obtaining a reception signal. At this time, the radar de... | 04/19/2011 |
| 7425917 | Radar for detecting the velocity of a target A radar including a target measurement component, a differential velocity calculator and an overall velocity determination portion. The target measurement component transmits and receives an electromagnetic wave over a detection range repeatedly at measurement inter... | 09/16/2008 |
| 7375802 | Radar systems and methods using entangled quantum particles An entangled quantum particle generator generates a signal including a plurality of entangled particles. The wavelength of the signal is the sum of the wavelengths of the entangled particles. A signal processor determines a characteristic of the target based on info... | 05/20/2008 |
| 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 |
| 7333185 | Optical velocimeter, displacement information measurement device and conveying and processing device There is provided an optical velocimeter for achieving miniaturization and lower power consumption thereof and for accurately detecting two-dimensional travel velocity of a measured object. This optical velocimeter includes a light-emitting element, a diffraction gr... | 02/19/2008 |
| 7327308 | Programmable method and test device for generating target for FMCW radar A test device for a frequency modulated continuous wave (FMCW) radar is provided. The test device has a central control unit for monitoring the FMCW radar. When the FMCW radar transmits a frequency modulated continuous signal to search for a target, the central cont... | 02/05/2008 |
| 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 |
| 7190306 | Method and system for detecting with radar the passage by a vehicle of a point for monitoring on a road The invention relates to a method for detecting the passage by a vehicle of a determined point for monitoring on a road, wherein from a remotely situated location a radar beam is transmitted continuously to the point for monitoring, reflections from the transmitted ... | 03/13/2007 |
| 7030806 | Time domain radio transmission system A time domain communications system wherein a broadband of time-spaced signals, essentially monocycle-like signals, are derived from applying stepped-in-amplitude signals to a broadband antenna, in this case, a reverse bicone antenna. When received, the thus transmi... | 04/18/2006 |
| 6982668 | Tangential velocity measurement using interferometric MTI radar Radar systems use time delay measurements between a transmitted signal and its echo to calculate range to a target. Ranges that change with time cause a Doppler offset in phase and frequency of the echo. Consequently, the closing velocity between target and radar ca... | 01/03/2006 |
| 6831595 | Radar apparatus equipped with abnormality detection function Disclosed is a radar apparatus equipped with a function for detecting an abnormality of modulation width. Distance rt2 at time t2 is calculated from the values of the distance Rt1 and the relative velocity Vt1 measured at ... | 12/14/2004 |
| 6798374 | Traffic surveillance radar using ranging for accurate target identification Disclosed is a Doppler shifted radar apparatus for correct target identification with respect to surveillance of moving vehicles. More particularly, an improved radar detection system using two or more continuously transmitted frequencies is used. The multiple frequ... | 09/28/2004 |
| 6731235 | Mispairing determination and signal processing method for FM-CW radar When a new target is detected, if it is determined that the distance difference between the newly detected target and the previously detected target is within a predetermined range, the difference between the relative velocity of the newly detected target and the re... | 05/04/2004 |
| 6661370 | Radar data processing apparatus and data processing method The invention detects a ghost occurring due to mispairing, reflections from a wall, or the like, and improves the ability of a radar to track targets when actual relative velocity changes by more than a certain value. If a stationary target is present wit... | 12/09/2003 |
| 6633617 | Device and method for compensating or creating doppler effect using digital signal processing Doppler shift compensation by interpolation of a new sample between successively received signal samples using stored values of an interpolation function. The interpolation function has a non-zero amplitude in an argument range symmetrical about zero argu... | 10/14/2003 |
| 6492934 | Method of deriving ground speed for descending aircraft The present invention is a method of deriving a ground speed of an aircraft on a descent along a flight path. A vertical speed signal is produced as a function of an altitude signal and a vertical acceleration signal. The vertical speed signal is transfor... | 12/10/2002 |
| 6266004 | Radar method used in a motor vehicle The invention relates to a radar method for an automatic intelligent traffic control (AICC) in a motor vehicle. The use of a frequency modulation continuous wave method (FM-CM) is suggested in order to securely detect the distance to, relative speed and a... | 07/24/2001 |
| 6232912 | Method for detecting a target by means of a high pulse repetition frequency radar system The invention particularly relates to the detection of fast-flying targets by means of an HPRF radar system that operates with a plurality of switchable pulse-repetition frequencies (PRFs). In the method, a high velocity resolution is attained, which perm... | 05/15/2001 |
| 6232910 | High performance vehicle radar system A radar system is described for use in vehicular applications. The radar system is particularly suited to backup warning systems and lane-change warning systems. The radar minimizes many of the problems found in the prior art by providing programmable del... | 05/15/2001 |
| 6147638 | Method for operating a radar system In a method for operating a radar system, the object is to determine by simple means and at low cost the distance and/or the radial velocity of at least one target object with high resolution. For this purpose, in each measuring phase of the measurement p... | 11/14/2000 |
| 6121917 | FM-CW radar In an FM-CW radar, a receive section has an array antenna in which a plurality of element antennas are arrayed as receive antennas, and a plurality of mixers for generating a beat signal of each channel from a receive signal for each element antenna, and ... | 09/19/2000 |
| 5999117 | Method for tracking and detecting turns of maneuvering targets A method for detecting and tracking turns of a maneuvering target comprises the steps of determining first and second radar information of the maneuvering target. The first and second radar information and a set of target speeds are used to determine a se... | 12/07/1999 |
| 5847675 | Radar with a wide instantaneous angular field and a high instantaneous angular resolution in particular for a missile homing head This radar with a wide instantaneous angular field and a high instantaneous angular resolution, in particular for a missile homing head, includes essentially: a transmitting antenna with a relatively wide radiation pattern, transmitting a quasi-continuous... | 12/08/1998 |
| 5787348 | Method of measuring speed of a mobile unit and a receiver for use in a wireless communication system A method of measuring speed of a mobile unit for use in a wireless communication system 20. The method includes the steps of receiving a radio frequency (RF) signal from the mobile unit 202, measuring signal quality of the RF signal to produce a received ... | 07/28/1998 |
| 5781282 | Distance measurement device A distance measurement device is provided which determines the measurement zone of an object and also determines the direction of movement of the object within the measurement zone. The distance measurement device comprises distance measurement means for ... | 07/14/1998 |
| 5521696 | Laser-based speed measuring device A laser speed detector is described which includes a laser rangefinder which determines the time-of-flight of an infrared laser pulse to a target and a microprocessor-based microcontroller. The device is small enough to be easily hand-held, and includes a... | 05/28/1996 |
| 5455588 | Method for determining target velocity by measuring phase shift A method for determining velocity of a target object comprises transmitting a propagating wave emitted from a wave transmitter and detecting a reflected wave reflected back by the target object by using a wave receiver, and determining of a phase angle di... | 10/03/1995 |
| 5359404 | Laser-based speed measuring device A laser speed detector is described which includes a laser rangefinder which determines the time-of-flight of an infrared laser pulse to a target and a microprocessor-based microcontroller. The device is small enough to be easily hand-held, and includes a... | 10/25/1994 |
| 5177487 | Sea velocity evaluator Sea clutter can be removed from radar signals by accurately determining sea velocity in a coverage area of a radar scan, updating a median value for the coverage area, and selecting a clutter rejection filter for the coverage area biased on the median val... | 01/05/1993 |
| 5157402 | Method and apparatus for calculating motional characteristics For calculating motional characteristics, particularly of a projectile moving in a barrel of weapon, a microwave directed onto the projectile by a measuring structure is superimposed with the reflected wave and a a calculation of location-dependent veloci... | 10/20/1992 |
| 5049887 | Target range detector with moving target indication An apparatus for determining a target position within a selected range segment includes a range gate generator which provides a range gate signal that enables a detector for a time interval corresponding to the range segment and a signal generator, respon... | 09/17/1991 |
| 4973966 | Apparatus for determining the speed of motion of slowly moving objects A Gunn microwave transmitter/receiver is coupled to an antenna to transmit microwave signals perpendicularly to a surface of a motionless or a slow moving object and to receive waves reflected from the object. The frequency of the oscillator of the Gunn t... | 11/27/1990 |
| 4963888 | Single-scan editor of bird echoes A single-scan editor of bird echoes uses range rate to aid in identifying bird echoes. The range rate is preferably calculated from change in phase between one interpulse period to the next interpulse period and both unfiltered and MTI filtered signals ar... | 10/16/1990 |
| 4860014 | Doppler radar with multiphase modulation of transmitted and reflected signal A microwave radar signal is generated (16) and split by a circular (20). A phase shifter (24) introduces a plurality of phase shifts into a first part of the split signal which is then transmitted (36) by antenna (34). A like plurality of phase shifts are... | 08/22/1989 |
| 4426647 | Radar arrangement for measuring velocity of an object 44A radar arrangement (1) suitable for measuring the horizontal velocity v of an aircraft relative to the ground (2) comprises an high-frequency signal generator (10) including a transmitting aerial (9), a receiver including two aerials (12, 11) spaced a ... | 01/17/1984 |
| 4292637 | Interrogating radar for use with tagged targets An interrogating station includes apparatus for transmitting a frequency modulated signal having a relatively low modulation rate to a plurality of uniquely tagged targets and for receiving therefrom a further modulated reply signal at a relatively high m... | 09/29/1981 |
| 4271412 | Range tracker utilizing spectral analysis A radar system transmits a signal to a target wherein the frequency is modulated with a sinusoidal modulation pattern. The difference between the actual target range and an estimate thereof is subjected to a spectral analysis wherein the spectral terms ar... | 06/02/1981 |
| 4219814 | Scanning radar A radar, such as a ranging radar, includes a non-scanning antenna which directs a beam of microwave energy toward and receives a return beam from a microwave reflector. A microwave reflector is mounted to a movable platform. As the platform moves, the mic... | 08/26/1980 |
| 4216473 | MIPS Hover attachment An attachment is provided for aircraft, and particularly for helicopters, for use in conjunction with a microwave interference pattern sensor (MIPS) system, to sense low velocities, for example, such as are encountered when the helicopter is in a hover mo... | 08/05/1980 |
