General purpose sidelobe canceller system

Details General purpose sidelobe canceller system General purpose sidelobe canceller system

1979-02-26

1994-09-27

Blum, Theodore

Communications: directive radio wave systems and devices (e.g.,

Directive

Utilizing correlation techniques

342381, G01S 316, G01S 328

Patent

active

053510585

ABSTRACT:
A digital, open-loop, sidelobe canceller system includes an arrangement of uxiliary-channel preprocessing cancellers and a series of main-channel cancellers in which specific cancellers average a different number of samples for cancelling both barrage (continuous) jamming and false-target-repeater jamming, which enter the sidelobes of a radar antenna. The preprocessing cancellers and each of the main-channel cancellers, except the last succeeding main-channel canceller, use long-time averaging (averaging over a large number, n, of samples of the main and auxiliary signals, where n>>2) for removing barrage jamming from the main signal. The last succeeding main-channel canceller uses short-time averaging (averaging over approximately 2-4 samples) for removing false-target-repeater jamming from the main signal.

REFERENCES:
patent: 3938153 (1976-02-01), Lewis et al.
patent: 4005426 (1977-01-01), White

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