Multiple source jamming signal cancellation system

Details Multiple source jamming signal cancellation system Multiple source jamming signal cancellation system

1975-06-16

2000-08-08

Barron, Jr., Gilberto

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

Radar ew

Eccm

455303, G01S 736

Patent

active

061008389

ABSTRACT:
Suppression of jamming from multiple sources is achieved by detecting the AM difference frequency produced by the beating of a desired signal and the smaller of the multiple jamming signal with the stronger jamming signal and applying same to one input of a single-sideband modulator while simultaneously applying the received signal (containing both the desired signal and the jamming signals) to the other input to the single-sideband modulator whereby the larger jamming signal is suppressed. The sum and difference outputs of the single-sideband modulator containing the upper and lower sidebands, respectively, of the desired signal plus the smaller jamming signal are each processed by a jamming cancellation circuit to suppress the smaller jamming signal and their outputs combined to receive the desired signal.

REFERENCES:
patent: 3011053 (1961-11-01), Sev
patent: 3226646 (1965-12-01), Ludwig
patent: 3456198 (1969-07-01), Black
patent: 3769591 (1973-10-01), Brown et al.
patent: 3896442 (1975-07-01), Heminway et al.

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