Clutter discriminating apparatus for use with pulsed doppler rad

Details Clutter discriminating apparatus for use with pulsed doppler rad Clutter discriminating apparatus for use with pulsed doppler rad

1977-07-14

1978-10-10

Moskowitz, Nelson

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325477, G01S 942

Patent

active

041199669

ABSTRACT:
In apparatus for discriminating targets from clutter, a high threshold circuit for passing only signals with sufficient amplitude and a lower threshold circuit passing signals of a sufficient amplitude to range extent circuitry, which passes only signals within a predetermined duration and which do not have other range signals adjacent thereto, and to frequency extent circuitry, which passes only signals within a predetermined bandwidth and which do not have other frequency signals adjacent thereto. Signals which satisfy the amplitude, range and frequency requirements then provide an output indicative of a target; all other signals are rejected as clutter.

REFERENCES:
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patent: 3680096 (1972-07-01), Bosc
patent: 3707718 (1972-12-01), Ames
patent: 3720942 (1973-03-01), Wilmot et al.
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patent: 3828348 (1974-08-01), Murray, Jr.
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patent: 3898654 (1975-08-01), Vehrs, Jr.
patent: 3908190 (1975-09-01), Nathan et al.

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