Communications: directive radio wave systems and devices (e.g. – Determining direction – Scanning
Patent
1993-07-30
1994-09-27
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Determining direction
Scanning
342372, 342 81, 342140, 342202, G01S 1342, H01Q 322, H01Q 342
Patent
active
053510534
ABSTRACT:
A radar system that includes an ultra wideband radar signal processor for electronically scanned arrays that utilizes frequency offset generation (FOG) to achieve beam steering as compared with phase shift and time delay techniques of conventional radars. The device comprises a transmit antenna, a chirp generator connected to the transmit antenna and a first summing circuit, a receiver antenna connected to the first summing circuit, a Doppler de-ramping chirp circuit connected to a second summing circuit, the output of the second summing circuit connected to an amplitude and weighting circuit and the output of the amplitude circuit connected to a spectrum analyzer of a Fast Fourier Transform (FFT) circuit. The signal processing consists of mixing the target returns with the transmitted signal to obtain a video beat note signal. This video beat note signal is mixed with a Doppler de-ramping chirp waveform which is matched to the desired target velocity. The output is amplitude weighted and the FFT algorithm applied. To achieve beam steering for the detection of off boresight targets, a phased array with distributed receivers is required. Also, frequency offset generation must be incorporated into the Doppler de-ramping chirp generator.
REFERENCES:
patent: 3434139 (1969-03-01), Algeo
patent: 4160975 (1979-07-01), Steudel
patent: 4276551 (1981-06-01), Williams et al.
patent: 4516131 (1985-05-01), Bayha et al.
patent: 4520361 (1985-05-01), Frazita
patent: 4670756 (1987-06-01), Lopez
patent: 4683474 (1987-07-01), Randig
patent: 4689627 (1987-08-01), Lee et al.
patent: 4739334 (1988-04-01), Soref
patent: 4749995 (1988-06-01), Hopwood et al.
patent: 4827229 (1989-05-01), Sabet-Peyman et al.
patent: 4861158 (1989-08-01), Breen
patent: 4868574 (1989-09-01), Raab
patent: 4912474 (1990-03-01), Paturel et al.
patent: 5111208 (1992-05-01), Lopez
patent: 5146616 (1992-09-01), Tang et al.
patent: 5239309 (1993-08-01), Tang et al.
Brown Russell D.
Wicks Michael C.
Auton William G.
Collier Stanton E.
Erlich Jacob N.
Sotomayor John B.
The United States of America as represented by the Secretary of
LandOfFree
Ultra wideband radar signal processor for electronically scanned does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultra wideband radar signal processor for electronically scanned, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultra wideband radar signal processor for electronically scanned will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1268148