| Patent Number |
Title Of Patent |
Date Issued |
| 5239301 |
Phase/phase/frequency-scan radar apparatus |
August 24, 1993 |
| A phase/phase/frequency-scan radar apparatus having multiple-beam search and single-beam track capabilities, using a single array antenna employing a novel combination of phase/phase scan in two dimensions together with frequency-scan. Generally, the additional frequency scan capability |
| 5140332 |
Short pulse radar system with a long pulse transmitter |
August 18, 1992 |
| A radar system is disclosed which includes a transmitter which produces a long coded radar pulse. The return of the long coded radar pulse is compressed by a long pulse compression filter to produce a short coded pulse and the short coded pulse is compressed by a short pulse compression |
| 5132690 |
Low power polystatic radar method and system |
July 21, 1992 |
| Polystatic radar system and method for operating at relatively low power for a given coverage. The illumination power density of the transmit pattern is continuously varied as a function of the range to the receiver from each point within the receive beam coverage. |
| 5101209 |
Jam strobe resolution using a monopulse antenna |
March 31, 1992 |
| In a surveillance radar, a process is disclosed which can determine the angular positions of multiple jammers with the use of a monopulse agile beam antenna. It involves collecting and processing jammer data received via a monopulse antenna, in order to determine jammer location, and to |
| 5066956 |
Azimuth-stacked radar method and apparatus |
November 19, 1991 |
| An azimuth-stacked radar method and apparatus of the type typically used for surveillance employs a mechanically-rotating antenna comprising horizontal end-fed rows of antenna radiating elements with phase shifter control on each row together with a monopulse elevation manifold to ge |
| 4924230 |
Search detection apparatus |
May 8, 1990 |
| A radar search detection apparatus having a monopulse antenna to receive sum and difference beam signals which are applied to separate target detection channels to detect and identify target returns. |
| 4862180 |
Discrete source location by adaptive antenna techniques |
August 29, 1989 |
| A signal processor for radar systems having phased array antenna structures. The processor determines the angle of arrival of the signal from a discrete energy source. The separate elements or output ports of the antenna structure are sampled to form a matrix of signal values. These |
| 4739331 |
Channelized receiver continuous wave radar system |
April 19, 1988 |
| A continuous wave radar system arrangement for improving the dynamic range of the radar receiver. The transmitted carrier signal is frequency modulated by a periodic sawtooth waveform causing a predetermined peak frequency shift. The radar receiver includes a plurality of separate re |
| 4618864 |
Radar channel including an orthogonal MTI filter pair |
October 21, 1986 |
| In a radar operating in a moving target indication (MTI) mode with frequency diversity by transmitting N+1 pulse bursts and receiving echo signalling therefrom, a radar channel is included for doppler processing the received N+1 pulse echo signal bursts. Each pulse of the same burst |
| 4137532 |
VIP doppler filter bank signal processor for pulse doppler radar |
January 30, 1979 |
| A low PRF pulse doppler radar system utilizing a VIP digital filter bank signal processor to suppress echoes from terrain, rain, and chaff, and pass echoes from aircraft moving at higher speeds is disclosed.Each of a plurality of VIP filters individually provides high attenuation to unde |
| 4122448 |
Automatic phase and gain balance controller for a baseband processor |
October 24, 1978 |
| An automatic phase and gain balance controller is incorporated in a typical baseband processor of a MTI radar system employing doppler processing techniques to effect balancing adjustments in the in-phase (I) and quadrature (Q) signal generation channels for substantially eliminating |
