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6414627 Homodyne swept-range radar  
A single-antenna short-range radar transceiver emits 24 GHz RF sinewave packets and samples echoes with strobed timing such that the illusion of wave propagation at the speed of sound is observed,...
6414628 Method of detecting fault of radar apparatus using movement distance and radar apparatus for the same  
A radar apparatus mounted on a vehicle includes a detecting section and a fault determining section. The detecting section includes a radar unit and detects a detection object using radar wave...
6400304 Integrated GPS radar speed detection system  
The combination of a global positioning satellite system (GPS) and a radar detection unit, in wireless communication with the GPU, for tracking and determining the speed of a vehicle. The system...
6400311 Radar rangefinder  
The inventive radar rangefinder has a transmitting/receiving antenna (22) for surveying a danger area. Said antenna is located in a radome housing (12), on a rotatable platform (18). A reflector...
6396436 Radar method for measuring distances between and relative speeds of a vehicle and one or more obstacles  
The present invention relates to a CW radar method for measuring distances between and relative speeds of a vehicle and one or more obstacles. The present invention further provides that the...
6388603 System and method for bistatically determining altitude and slant range to a selected target  
A bistatic passive radar system is used in conjunction with a host transmitter that is a determinable distance D from the radar system for determining the distance D and for displaying video...
6384768 FM pulse Doppler radar apparatus  
AN FM pulse Doppler radar apparatus performs pulse modulation of modulating waves having repeatedly increasing and decreasing frequency, transmits thus modulated waves, receives at each range gate...
6384769 Method for measuring distances/speeds of plural targets and radar apparatus, capable of discriminating moving targets from stationary targets  
The present invention discriminates between moving targets and stationary targets in order to measure distances and speeds of the targets without producing a false target. The invention transmits...
6380885 Obstacle recognition system for vehicle  
Height-wise positions of objects are detected on the basis of distances to the objects from a vehicle, angles of the objects in a width-wise direction of the vehicle, and angles of the objects in...
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....
6373428 Self locking dual frequency clock system  
Two crystal oscillators are configured as a “plug-and-play” precision transmit-receive clock system that requires no calibration during manufacture. A first crystal oscillator generates a transmit...
6366236 Neural network radar processor  
A neural network radar processor (10) comprises a multilayer perceptron neural network (100.1) comprising an input layer (102), a second layer (122), and at least a third layer (124), wherein each...
6362773 Method for determining range of vision  
A method via which the range of vision in a vehicle's field of view can be determined precisely, so that with the help of range-of-vision information the driver can be advised to modify his...
6362777 Pulse-doppler radar apparatus  
A Pulse-Doppler radar apparatus is constructed such that an output of an oscillator is divided by a distributor and an on/off switch for generating pulses is coupled to an IF input of a first...
6353407 Radar tank level indicating system for measurement of water content in shipboard tank involving identification of fuel-water interface  
A microwave radar signal system generates separate level indicating signals for transmittal through a sounding tube into a contamination tank having a mixture of fuel and gross free water...
6353406 Dual mode tracking system  
System for tracking mobile tags. Cell controllers with multiple antenna modules generate a carrier signal which is received by the tags. Tags shift the frequency of the carrier signal, modulate an...
6333710 Method for measuring the time delay between two periodic pulse signals of the same frequency  
The invention concerns a device for measuring the time delay between a first periodic pulse signal (2) and a second periodic pulse signal (5) having the same frequency as the first pulse signal...
6326915 Radar device with multiplexed display functions for use in backing up a vehicle  
A radar device for use in backing up a vehicle is disclosed herein. A plurality of wave sensors is installed on a rear portion of a vehicle for detecting an obstacle therebehind. A master...
6292138 Method of determining distance between diversity antennas  
A diversity antenna distance determining method in radio telecommunications base station is provided. The method comprising the step of determining an allowable correlation coefficient of signals...
6281833 Range rate aiding in a pulsed radar system  
A timing and control method and apparatus (111) for performing precise range rate aiding includes a range gate delay means (114) for generating an estimate of the range gate delay (135) each pulse...
6278398 Sensor system operating method and a sensor system  
A method in which a sensor system with a frequency-modulated signal source an a delay line for generating a time-delay reference signal is implemented. Phase errors are compensated by correcting...
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...
6262680 Rocket trajectory estimating method, rocket future-position predicting method, rocket identifying method, and rocket situation detecting method  
There is provided a rocket trajectory estimating method comprising the steps of: measuring a GLOS angle of a flying rocket a tracking system; passing the GLOS angle data through a batch filter to...
6246359 Radar  
A signal processing unit detects the azimuthal direction of a target in accordance with the phase difference between signals received by two receiving antennas. Then, by sequentially switching...
6246358 Method and electronic circuit for the processing of an analog signal  
An electronic circuit for the processing of an analog electrical signal is provided with a receiver for receiving the signal reflected by an object. The amplitude of the signal received is a...
6239741 UWB dual tunnel diode detector for object detection, measurement, or avoidance  
A highly sensitive, high-speed dual tunnel diode detector is described for use in Ultra Wideband (UWB) object detection systems, such as a radar. The extended capability of the detector to both...
6236352 Heterodyned double sideband diplex radar  
A heterodyned double side band diplex radar system determines the range of targets as a function of the amplitude variation of reflected target Doppler signals. The present invention includes a...
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...
6232913 Method and system for measuring radar reflectivity and doppler shift by means of a pulse radar  
Characteristics of a target are measured by a radar or sonar. Pulses (101, 102, 103) are transmitted and in between (X) the transmissions of pulses a signal is received which depends on the...
6229476 Liquid level meter  
A liquid level meter is provided for measuring a level of a liquid (1) in a container (3), which meter measures acceptably in the case of liquids with low dielectric constants, and the...
6229473 Arrangements for the one-dimensional or multi-dimensional determination of the position of a load suspension point in hoists  
The stopping of a load suspended from a crane requires a swing control or, respectively, a swing damping. Upon employment of microwave measuring units, spacings between a carrying cable suspension...
6222487 System and method for measurement  
A method and a system for determining an altitude of an object of interest, for example, an airplane that transmits electromagnetic radiation in the form of radar signals. A number of sub-units...
6215438 Vehicle radar system  
A radar system adapted to be installed on a vehicle (1) is operable to detect objects in different fields of view of the system. The system has transceiver means (2, 3; 44, 46) for transmitting a...
6211807 System using spread spectrum modulation for locating underground objects  
The location of underground objects such as pipes and conduits are located by detecting electrical signals emitted by the underground objects where the radiated signals include spread spectrum...
6208286 Method for discovering the location of a living object and microwave location device for realizing the same  
The method includes radiating an RF signal within a time Tt, receiving a reflected signal within a fixed time Tr equal in duration to the fixed time Tt of the radiated signal plus a delay τd...
6198424 Multiple process product interface detection for a low power radar level transmitter  
Disclosed is a low power time domain reflectometry radar (LPTDRR) level transmitter for calculating levels of first and second products in a tank. A termination extends into the first and second...
6191724 Short pulse microwave transceiver  
Harmonic techniques are employed to leverage low-cost, ordinary surface mount technology (SMT) to high microwave frequencies where tight beamforming with a small antenna makes reliable,...
6184818 Level measuring arrangement  
An arrangement for measuring the liquid level in a tank. The arrangement has a microwave transmitting/receiving device and a waveguide that extends into the tank for guiding a coupled-in...
6169485 System and method of radio transmission between a radio transmitter and radio receiver  
An antenna assembly providing selectable omnidirectional or directional reception of radio transmissions in a frequency band in accordance with the invention includes an electrically conductive...
6166682 Radar device and object detection method  
A radar device capable of discriminating a person possessing metals from a person having no metals by transmitting a radio wave includes a voltage controlled oscillator for generating a radio...
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...
6147637 Obstacle detecting system for automotive vehicle  
An automotive obstacle detecting system is provided which includes a radar to measure the distance to a target present within a detectable zone. The system monitors a distance limit measurable by...
6137439 Continuous wave doppler system with suppression of ground clutter  
In a continuous wave Doppler system in which a fixed transmitter transmits a continuous wave signal to be reflected by moving targets and by fixed structure, an aircraft receives the reflective...
6137438 Precision short-range pulse-echo systems with automatic pulse detectors  
An equivalent time pulse-echo radar or other pulse-echo system employs a transmit reference sampler collocated with the transmitter to provide a transmit reference pulse, which initiates a pulse...
6127965 Method and apparatus for rejecting rain clutter in a radar system  
A method and apparatus for detecting the presence of objects in a vehicle operator's blind spots. The apparatus comprises a side-facing Doppler radar system using continuous wave (CW) transmission...
6122602 Method and arrangement for electromagnetic wave distance measurement by the pulse transit time method  
For electromagnetic wave distance measurement by the pulse transit time method, short electromagnetic transmission pulses are emitted at periodic transmission instants. The signals received in...
6111537 Method for reducing false target echo indications  
Method for reducing false target echo indications in a pulse Doppler radar having at least two different pulse repetition frequencies during the period in which the main beam of the radar...
6104337 Distance indicator system for golf  
A golf distance indicator system provides measurement and display of the distance between a golfer and the pin on the green he is approaching. The system comprises a portable unit carried by the...
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...
6087979 Rangefinder  
A signal source produces a frequency-modulated signal. The signal is supplied to a transmit/receive unit and transmitted. A surface-wave element produces a signal delayed by a delay from the...