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| Number | Title | Issue Date |
| 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 |
| 7129886 | System and method for detecting an intruder using impulse radio technology An intrusion detection system and method are provided that can utilize impulse radio technology to detect when an intruder has entered a protection zone. In addition, the intrusion detection system and method can utilize impulse radio technology to determine a locat... | 10/31/2006 |
| 7027534 | Extracting fine-tuned estimates from correlation functions evaluated at a limited number of values Techniques are provided for fine-tuning estimates of a delay value for a sampled signal. One aspect of the invention is to perform, for the sampled signal, coarse-grained calculations of the In Phase and Quadrature (I and Q) correlation integrals at a limited number... | 04/11/2006 |
| 7012561 | Device and method for registering, detecting, and/or analyzing at least one object In order to refine a device and a method for registering, detecting, and/or analyzing at least one object, a registration range and/or at a detection gate being displaced at a scanning speed over a measuring range, in such a way that a target-unique velocity measure... | 03/14/2006 |
| 6822605 | Radar device and method for coding a radar device A radar device is described having means (12) for generating a first code, means (18) for modulating a transmission signal in a transmitting branch using the first code, means (32) for delaying the first code, means (20) for modulating a ... | 11/23/2004 |
| 6750804 | System and method for detecting and estimating the direction of near-stationary targets in monostatic clutter using phase information A system and method for detecting a target. The inventive method includes the steps of receiving a complex return signal of an electromagnetic pulse having a real and an imaginary component; extracting from the imaginary component information representative of the p... | 06/15/2004 |
| 6590522 | Pulse radar device A pulse radar device, which includes a timing control unit that controls a transmit interval of a pulse signal, a transmitting unit that transmits the pulse signal, a receiving unit that receives a receive signal including a reflection signal component fr... | 07/08/2003 |
| 6480142 | Method and apparatus for measuring velocity and turbulence of atmospheric flows A method and apparatus for measuring the parameters of atmospheric turbulent flows utilizes the Doppler shifted frequencies of received radar signals backscattered from sound generated aerodynamically by atmospheric turbulent flows. Doppler frequency band... | 11/12/2002 |
| 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 repetition interval as a function of the initial range (13... | 08/28/2001 |
| 6243037 | Tracking method for a radar system A tracking method for a signal echo system, including generating a plurality of gates for respective propagation modes on the basis of a target state prediction for a dwell time, and generating a target state estimate for the dwell time on the basis of ta... | 06/05/2001 |
| 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 |
| 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 illuminates a target. A target which is detected gives rise to a nu... | 08/29/2000 |
| 5977905 | Target detection method and device for wideband unambiguous pulse Doppler radar Coherent bursts of N wideband, low repetition frequency width-modulated pulses are transmitted, and they are received with pulse compression and then sampling. For each range gate and each speed hypothesis, a selection is made of the corresponding samples... | 11/02/1999 |
| 5907301 | Procedure and device for the control of a radar unit A procedure and a device for controlling, in a radar unit for the measurement of target data, the transmission of radar pulses and the reception of target echoes originating from the transmitted radar pulses, in such a way that the performance of the rada... | 05/25/1999 |
| 5774091 | Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as ... | 06/30/1998 |
| 5546088 | High-precision radar range finder The present invention pertains to a radar range finder for high-precision, contactless range measurement, which is based on the FMCW principle and operates with digital signal processing at a limited frequency shift. One exemplary embodiment is described.... | 08/13/1996 |
| 5440311 | Complementary-sequence pulse radar with matched filtering and Doppler tolerant sidelobe suppression preceding Doppler filtering A radar transmits dispersed pulses in which the subpulses are modulated by first and second mutually complementary code sequences, the autocorrelation functions of which are selected so that, in the sum of their autocorrelation functions, the main range l... | 08/08/1995 |
| 5376939 | Dual-frequency, complementary-sequence pulse radar A radar system simultaneously transmits first and second signals toward a target at higher and lower carrier frequencies, respectively. Each carrier is phase-modulated by a set of pulses. The first set of pulses is dispersed in time, and the second set of... | 12/27/1994 |
| 5357331 | System for processing reflected energy signals An energy pulse capture system senses, receives, and processes signals reflected from a target. In an illustrative embodiment, light pulses are reflected off of a target, received by optical equipment, converted into analog electrical signals, and then pr... | 10/18/1994 |
| 5293168 | Radar apparatus and method The invention provides a method of determining the range of a radar signal reflecting object by utilizing a radar frequency carrier wave modulated by a first short code having a first repetition rate and a second code having a bit rate equal to the first ... | 03/08/1994 |
| 5181039 | System for sensing the approach of a moving missile to a target A system for determining the trajectory of a missile and the minimum miss distance with respect to a target aircraft, comprises two transmitters on the aircraft each cooperating with four receivers on the aircraft. Each transmitter radiates a succession o... | 01/19/1993 |
| 5173706 | Radar processor with range sidelobe reduction following doppler filtering A multipurpose system provides radar surveillance for air traffic control purposes. The system includes four separate active phased-array antennas, each with &#b1;45° coverage in azimuth, from 0° to 60° in elevation. Each antenna element of each phased... | 12/22/1992 |
| 4691204 | Radar apparatus A radar apparatus for detecting a distance from a radar antenna (13) to a buried object (1) underground. The radar apparatus calculates the distance based on Maxwell's equation relating to speed of propagation of electromagnetic waves using received signa... | 09/01/1987 |
| 4580139 | Waveform design for optimized ambiguity response This is a method of waveform design and range correlator implementation t uses weighting to optimize a radar receiver's ambiguity response in both the temporal and frequency dimensions of the ambiguity function. It is an extension of group-complementary ... | 04/01/1986 |
| 4430655 | Radar target angle measuring system A radar system for measuring an angle of a target. A radar antenna produc at any given instant, one of a pair of directional radar beams. The beams are angularly displaced with respect to each other and overlap within the expected target direction. A cod... | 02/07/1984 |
| 4329687 | Radar radiating polarized signals The radar radiates, alternately or according to a given code, left-hand and right-hand circularly or elliptically polarized signals. At the receiving end, the two orthogonal polarized components of the received signal are processed separately, and the pha... | 05/11/1982 |
| 4016567 | CCD range-doppler processor Signal processing wherein signals are processed using chirp-Z-transform (CZT) techniques and charge transfer device (CTD) transversal filters. The chirp weighting signal may be amplitude modulated to achieve signal apodization and may be generated by impu... | 04/05/1977 |
| 4003051 | Expanded range gate moving target indicator The range bin width of a range gated moving target indicator (RG-MTI) is expanded to decrease the sensed range resolution to that which is compatible with the displayable range resolution, without limitation by the pulse width of the transmitted radar pul... | 01/11/1977 |
| 4001823 | Pulse radar method and system A pulse radar system which is designed for installation on a vehicle. A control pulse generating circuit is triggered by the trailing edge of a transmitting pulse to generate a pulse train consisting of 8 time-divided pulses which in turn are supplied to ... | 01/04/1977 |
| 3955195 | Fixed beam radar with dual range light display providing both range and azimuth information A radar principally for use on small vehicles such as sailboats, utilizing a fixed antenna which provides a continuous forward looking beam and has a dual range display providing range and limited azimuth information. Separate antenna elements are utilize... | 05/04/1976 |
| 3946394 | Fixed beam radar with range light display A radar principally for use on small vehicles such as sail boats, utilizing a fixed antenna which provides a continuously forward looking beam and which provides a range display only. Utilizing digital techniques, the video representing radar echoes is ga... | 03/23/1976 |
| 3934253 | Doppler frequency radar system with very short pulse modulated high frequency carrier waves 1. A doppler frequency radar system, comprising means for generating a high frequency carrier wave, means for amplitude modulating said carrier wave at a relatively low frequency, means for also amplitude modulating such carrier wave to produce short impu... | 01/20/1976 |
