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7489937 |
Method and apparatus for detecting emitter movement
A method and apparatus for detecting emitter movement. The method and apparatus generally include acquiring a measured signal characteristic corresponding to a signal emitted from an emitter,...
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7420503 |
Small-sized low-power dissipation short-range radar that can arbitrarily change delay time between transmission and reception with high time resolution and method of controlling the same
In a configuration according to a short-range radar of the present invention and a method of controlling the same, the timing at which a variable-period pulse output from a variable-period pulse...
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7400290 |
Vehicle radar system having multiple operating modes
A vehicle radar system includes a processing system which operates in one of a plurality of operating modes which are selected based upon an environment (or changes to an environment) surrounding...
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RE40128 |
Stabilization in a radar level gauge
A radar gauge adapted to sense fluid level in a tank and including a radar gauge circuit in which radar transmission and level sampling are controlled by a transmit frequency and a sample frequency...
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7248205 |
Radar apparatus
A transmitter emits into an intended search space a radar wave having a predetermined frequency pulse-modulated by a trigger pulse of a predetermined width. A receiver receives a reflected wave of...
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7233898 |
Method and apparatus for speaker verification using a tunable high-resolution spectral estimator
A tunable high resolution spectral estimator is disclosed as a method and apparatus for encoding and decoding signals, signal analysis and synthesis, and for performing high resolution spectral...
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7221309 |
FM-CW radar system
In an FM-CW radar system, a frequency modulating said modulating wave output from said modulating signal generator has a frequency variation skew with respect to a time axis (modulation skew), and...
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7151477 |
Signal detection
A transmitted signal and a received signal are combined and the combination is expected to determine whether or not a target signal is present. Either the transmitted signal or the received signal...
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7136013 |
Radio-wave radar system and adaptive cruise control system
In a radio wave radar system using a two-frequency CW modulation method, it is possible to detect a distance between a host vehicle and a forward vehicle and to realize a stable ACC following...
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7095362 |
Radar measurement device, especially for a motor vehicle, and method for operating a radar measurement device
The present invention relates to a radar measuring device which, with a simple design, ensures reliable distance determination even when a mixed signal is zero, and a method for operating a radar...
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6756933 |
Radar system and characteristic adjustment method thereof
A radar system and a characteristic adjustment method for the radar system are provided, in which a control voltage waveform of a voltage controlled oscillator for frequency-modulating a sending...
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6400310 |
Method and apparatus for a tunable high-resolution spectral estimator
A high resolution spectral estimator (HREE) filter coupled to a spectral plotter processes either Doppler frequencies provided from the output of a pulse-Doppler radar or a frequency based output...
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6204801 |
System and method for obtaining precise missile range information for semiactive missile systems
A system (10) for determining the range between a missile (14) and a target (18) adapted for use with a semi-active missile system. The system (10) includes a first circuit (12) for generating a...
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6097331 |
FM-CW radar system for measuring distance to and relative speed of target
An FM-CW radar apparatus is provided which may be employed in automotive anti-collision or radar cruise control systems. The radar apparatus transmits as a radar wave a high-frequency signal which...
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5826216 |
Anticipatory collision sensor system
An anticipatory object detection system includes a transducer device for transmitting a modulated carrier signal and receiving the reflected modulated carrier signal from an object; a detection...
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5670962 |
Transmit power control for automotive radar system
A radar system for detecting hazardous objects has a transceiver including a transmitting antenna for transmitting microwave power. For a side detection system, power transmission is available when...
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5341144 |
Vehicular cruise control system and radar system therefor
A radar system (30) for determining the range at a future time of a target moving relative to the radar system. The system comprises an R.F. source (56) for providing a signal at a frequency which...
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5247303 |
Data quality and ambiguity resolution in a doppler radar system
The pulsed Doppler weather radar system reduces ambiguities in measured parameters by staggering at least one pulse of each frame of n pulses transmitted by the radar system. The staggered pulse...
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5087917 |
Radar system
A radar system having a phased array antenna for transmission and a digital beam forming antenna for reception for observing a plurality of targets by transmitting transmission pulses to the...
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4907000 |
Transmission reception system for frequency-agile doppler radars
A transceiver system of a frequency-agile Doppler radar comprises a transmission-side and a reception-side oscillator circuit both connected to a frequency-agility controller for concurrently...
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4893125 |
Vehicle diplex doppler near-obstacle detection system
A vehicle near-obstacle detector in the form of a diplex Doppler radar system provides range information between a vehicle and an object based on the phase shift between a pair of Doppler signals...
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4861159 |
Dynamic Doppler optical gauge
An optical gauge measures the shape of a target object by scanning a laser beam over it, (and/or measures the radial velocity of the target), by measuring the Doppler frequency shift of the...
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4861158 |
Chirp and Doppler optical gauge
A laser distance gauge measures the distance and shape of a target by alternately performing (a) a Doppler shift measurement during optical scanning of the target's surface and/or motion of the...
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4622555 |
Coded pulse Doppler radar with clutter-adaptive modulation and method therefore
A coded pulse Doppler radar having apparatus for determining the separation between the frequency spectrum returned from clutter and the frequency spectrum returned from a desired target, and...
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4450445 |
Range rate dependent pulse control apparatus and method therefor
A pulse width and amplitude control apparatus wherein an analog Doppler to digital pulse converter provides pulses to the up input of an up/down counter in the presence of a noise input or a...
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4403220 |
Radar system for collision avoidance
A radar system is disclosed adapted to detect relative headings between a system-equipped craft such as aircraft and ships at sea and a detected object moving relative to the ground, the system...
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4200872 |
Doppler compensated digital non-linear waveform generator apparatus
A non-linear digital waveform generator apparatus utilizing a variable clock to produce a predistorted transmission signal which is opposite to the distortion that is produced by the target's...
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4008473 |
Collision predicting operation system
There is provided a collision predicting operation system comprising a radar circuit whereby a reflected wave which has been radiated from an oscillator and encountered and reflected from a target...
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4005420 |
CW radar system
A self telemetering miss-distance radar method and system of high sensitivity and free of second-time-around echoes is provided by phase modulating a continuous wave signal with the output of a...
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3913106 |
Radar detection apparatus for preventing vehicular collisions
Radar apparatus is disclosed in which the relative speed and relative distance between a vehicle and a target are determined so as to prevent vehicular collisions. A two-frequency Doppler system is...
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3906364 |
Signal transmission systems with doppler shift compensation
A transmitter for sending a clock signal to a satellite includes a receiver for receiving the clock signal after reflection or re-transmission by the satellite. This received clock signal is used...
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3855594 |
MULTIPLE FREQUENCY CONTINUOUS WAVE RADARS
A multiple frequency continuous wave radar in which two Doppler signals derived from different transmitted frequencies are multiplied together and the product signal, after integration, controls a...
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3713151 |
LIGHTWEIGHT DOPPLER NAVIGATOR
An FM/CW Doppler Aircraft Navigation system which detects Doppler shift frequencies associated with Altitude holes to compute aircraft flight parameters. A transmitter is modulated at one frequency...
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3430237 |
TIME DIVISION MULTIPLEX SYSTEM
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3407403 |
Electrical detecting means
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3334344 |
Doppler radar altimeter
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3308458 |
Method of eliminating the susceptibility to interference of radar devices
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3205494 |
Miss-distance indicator
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3202960 |
Ultrasonic doppler speed measurement device
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3197769 |
Doppler measurement systems
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3159833 |
Hybrid doppler navigator
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2974222 |
Communication systems
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2935743 |
Noise reduction in continuous wave doppler radar systems
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