Gated pulse compression radar

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

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343 171PF, G01S 9233

Patent

active

041617320

ABSTRACT:
A pulse compression coherent radar for obtaining target information is described wherein a pulse compression waveform having a predetermined bandwidth is gated at a frequency greater than the predetermined bandwidth to form a sequence of spaced apart pulses which are transmitted towards a target. A sequence of target reflected pulses are received during predetermined time intervals. The target reflected pulses of the sequence are compressed and then filtered to extract predetermined frequency components of the compressed signal. Alternatively, the target reflected pulses of the sequence are first filtered to extract predetermined frequency components and then compressed. In either embodiment, the output signal contains target doppler frequency and phase, range, and amplitude signature information. The gated pulse compression waveform may be for example a chirp or linear FM signal, phase coded signal, or pseudo noise coded signal.

REFERENCES:
patent: 2427523 (1947-09-01), Dolberg et al.
patent: 3460141 (1969-08-01), Bouman
patent: 3679983 (1972-07-01), Theriot
patent: 3747099 (1973-07-01), Wong
patent: 3766477 (1973-10-01), Cook
patent: 3815133 (1974-06-01), Yasusaka et al.
"Radar Handbook" by M. I. Skolnik, 1970, McGraw-Hill Book Company, pp. 29-14 through 29-23.

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