Navigation receiver side lobe elimination method

Abstract

The invention discloses a navigation receiver sidelobe elimination method. The method comprises the following steps: selecting an adaptive filtering optimal criterion; then solving an optimal weight coefficient corresponding to an adaptive filtering optimal criterion, namely, firstly giving a derivation formula of the optimal weight coefficient according to an open-loop adaptive sidelobe cancellation algorithm, solving an inverse matrix of an autocorrelation matrix of an interference signal in the derivation formula, and obtaining the optimal weight coefficient according to the derivation formula; and finally, establishing a simulation environment, and performing performance simulation on the open-loop adaptive sidelobe cancellation system of the Beidou navigation receiver under the broadband condition. According to the invention, the optimal weight coefficient in the auxiliary antenna channel can be automatically adjusted according to different incoming wave directions of the target signal and the interference signal, so that the amplitude of the output signal is obviously reduced.

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