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| Number | Title | Issue Date |
| 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 generator including a direct digital synthesizer (DDS) has shifted in l... | 09/02/2008 |
| 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 the vehicle radar system. In one exemplary embodiment, the vehicle rad... | 07/15/2008 |
| 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 respectively. A first frequency separation between first and second ... | 03/04/2008 |
| 7286080 | High-frequency transmitting/receiving apparatus, radar system having the same, and vehicle and small boat equipped with the radar system Provided is a millimeter-wave transmitting/receiving apparatus of pulse-modulation type in which pulse-modulated millimeter-wave signals for transmission are prevented from being outputted to a reception system due to inner reflection or other causes. Included are: ... | 10/23/2007 |
| 7259713 | Ranging systems A continuous wave ranging system, comprising a modulator 2 for modulating an r.f. carrier wave in accordance with a pseudo random code, a transmitting antenna 5 for radiating the modulated signal towards a target, a receiving antenna 6 and recei... | 08/21/2007 |
| 7248208 | Methods and systems for maintaining a position during hovering operations A method for maintaining a position of a hovering vehicle that incorporates a radar altimeter is described. The method includes receiving signals at the radar altimeter based on a change of horizontal direction, operating the radar altimeter to generate a Doppler fr... | 07/24/2007 |
| 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 the radar wave and outputs a receive signal. A local pulse generator ... | 07/24/2007 |
| 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 estimation. The invention is comprised of an encoder coupled with either... | 06/19/2007 |
| 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 the radar system includes a means for varying the modulation skew by ... | 05/22/2007 |
| 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 is combined with an auxiliary signal containing a range of frequencie... | 12/19/2006 |
| 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 travel, even in a condition in which the relative speed is 0. By combining... | 11/14/2006 |
| 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 measuring device. The radar measuring device includes: A ... | 08/22/2006 |
| 7050000 | Radar based application programmable waveform generator component An exemplary radar system includes a waveform generator that generates a control waveform. An in-phase and quadrature modulator receives the control waveform from the waveform generator and in turn generates a waveform output that is amplified by a power amplifier b... | 05/23/2006 |
| 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 signal can be set in a short time without increasing the required amoun... | 06/29/2004 |
| 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 provided by a Fourier transformer coupled to a sensing devi... | 06/04/2002 |
| 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 periodic signal (24) that is periodically frequency modulate... | 03/20/2001 |
| 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 is so modulated in frequency with a modulating signal as t... | 08/01/2000 |
| 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 device for detecting a plurality of Doppler shifted harmonic ... | 10/20/1998 |
| 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 the vehicle is moving forward. A signal processor receive... | 09/23/1997 |
| 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 increases over time from a base frequency f (Hz) at a rate... | 08/23/1994 |
| 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 creates an isolated pulse doublet pair to provide three or m... | 09/21/1993 |
| 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 respective targets comprises a subtraction control circuit, a tr... | 02/11/1992 |
| 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 varying their operating frequencies. Each of these oscillator c... | 03/06/1990 |
| 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 derived from two transmitted radar signals at slightly diff... | 01/09/1990 |
| 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 target and (b) a chirp measurement with a chirp frequency las... | 08/29/1989 |
| 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 reflected wave. The Doppler-shifted frequency is demodulated by a... | 08/29/1989 |
| 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 circuitry responsive to the apparatus for adjusting the code to... | 11/11/1986 |
| 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 Doppler input, and a second analog Doppler to digital pulse conv... | 05/22/1984 |
| 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 being particularly adapted to collision avoidance application... | 09/06/1983 |
| 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 velocity.... | 04/29/1980 |
| 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 is received and caused to interfere with the radiated wave... | 02/15/1977 |
| 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 repetitive code source such as a pseudo-random noise generato... | 01/25/1977 |
