Wideband adaptive array using the chirp transform

Details Wideband adaptive array using the chirp transform Wideband adaptive array using the chirp transform

1986-09-10

1989-04-11

Tarcza, Thomas H.

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

Directive

Utilizing correlation techniques

342380, G01S 0386

Patent

active

048210374

ABSTRACT:
An adaptive array processor is disclosed for processing the signals from a main antenna and one or more auxiliary antennas to provide suppression of wideband interference. The outputs from the respective antennas are transformed into the frequency domain by synchronized chirp transformers conducted over a transform block length. The transformed auxiliary antenna signal is weighted by time varying, frequency dependent weights which are adaptively determined. The transformed main antenna and weighted auxiliary antenna signals are then combined. The combined signal is then transformed back to the frequency domain by an inverse chirp transformation.

REFERENCES:
patent: 4017859 (1977-04-01), Medwin
patent: 4254417 (1981-03-01), Speiser
patent: 4255791 (1981-03-01), Martin
patent: 4616232 (1986-10-01), Reits
patent: 4641143 (1987-02-01), Apostolos
patent: 4654667 (1987-03-01), Apostolos et al.

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