Radar clutter reduction by use of frequency-diverse, wideband pu

Details Radar clutter reduction by use of frequency-diverse, wideband pu Radar clutter reduction by use of frequency-diverse, wideband pu

1981-04-28

1984-01-24

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 175, G01S 728

Patent

active

044279825

ABSTRACT:
A method of and an apparatus for generating and transmitting wideband, exded radar pulses which spatially decorrelate clutter and are frequency-hopped from pulse to pulse by the proper frequency difference for clutter decorrelation by frequency-diversity are disclosed. The returned signals are compressed, delayed by one pulse interval and correlated, each with its succeeding echo pulse, to decorrelate the clutter returns but not the target echoes. The frequencies of the transmitted pulses are locked to the local oscillator frequency which is very stable. A double-sideband technique is used to generate the different pulse frequencies.

REFERENCES:
patent: 3290679 (1966-12-01), Brault et al.
patent: 3363248 (1968-01-01), Nicodemus
patent: 3374478 (1968-03-01), Blau
patent: 3403394 (1968-09-01), Rouault
patent: 3460141 (1969-08-01), Bouman
patent: 3878525 (1975-04-01), Alpers
patent: 3905033 (1975-09-01), Moore
patent: 3945012 (1976-03-01), Cooper
patent: 4121212 (1978-10-01), Taylor
patent: 4153900 (1979-05-01), Novak et al.

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