Spin echo matched filter ECM detector

Details Spin echo matched filter ECM detector Spin echo matched filter ECM detector

1973-01-29

1977-04-12

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

324 5A, G01S 736

Patent

active

040178552

ABSTRACT:
A system for determining the use of an ECM jammer against a bi-frequency radar utilizing a spin echo matched filter. Portions of two simultaneously transmitted radar RF pulses of different instantaneous carrier frequencies are coupled to a non-linear element which produces a composite pulse signal containing predetermined intermodulation product frequencies. This composite pulse signal is utilized as the input pulse to a spin echo system which has a locally generated postset pulse applied a predetermined time thereafter. The radar return signals are coupled to the spin echo system which produces a spin echo correlation signal upon the reception of an ECM radar return pulse which inherently contains substantially the same predetermined intermodulation product frequencies.

REFERENCES:
patent: 3147427 (1964-09-01), Varian
patent: 3513382 (1970-05-01), Hill et al.
patent: 3577145 (1971-05-01), Worden et al.
patent: 3636562 (1972-01-01), Wehner
patent: 3701154 (1972-10-01), McKinney

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