Hybrid adaptive sidelobe canceling system

Details Hybrid adaptive sidelobe canceling system Hybrid adaptive sidelobe canceling system

1980-01-30

1982-01-26

Blum, Theodore M.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343100CL, H04B 700

Patent

active

043131166

ABSTRACT:
A system for adjusting the sidelobe response of a main antenna is disclosed. This iterative process results permits the sidelobe canceling in sequential step reduction in interference thereby greatly reducing the time required to respond to changes in the characteristics of the interference. The response of the phased array is adjusted by combining the composite signal from the main antenna with signals from auxiliary channels which have an adjustable phase and amplitude. The desired amplitude and phase of the auxiliary channels is determined using an iterative mathematical process which emphasizes the most recent data. Emphasizing the most recent data permits the system to be used in the scanning mode or to reduce interference from moving sources.

REFERENCES:
patent: 3766559 (1973-10-01), Butcher, Jr.
patent: 3860924 (1975-01-01), Evans
patent: 3916417 (1975-10-01), Wong et al.
patent: 3943511 (1976-03-01), Evans et al.
patent: 3964065 (1976-06-01), Roberts et al.
patent: 3982245 (1976-09-01), Soule, Jr. et al.
patent: 4005426 (1977-01-01), White
patent: 4057802 (1977-11-01), Dollinger
patent: 4060792 (1977-11-01), Van Heyningen
patent: 4189733 (1980-02-01), Malm

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