Wideband adaptive array using the chirp transform

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

H - Electricity

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351/58

H04B 1/12 (2006.01) H01Q 3/26 (2006.01) H03H 21/00 (2006.01)

Patent

CA 1288863

WIDEBAND ADAPTIVE ARRAY USING THE CHIRP TRANSFORM ABSTRACT OF THE DISCLOSURE An adaptive array processor is disclosed for pro- cessing 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.

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