부산대학교 도서관

Fractional fourier transform (FRFT) processing has received extensive attention because of its superior anti-jamming performance. In this paper, in order to meet the demand of signal reception of intelligent wearable emergency search and rescue terminal in complex electromagnetic environment, a simulation study of adaptive filtering algorithm based on fractional Fourier transform is carried out. First, a theoretical model of fractional Fourier transform is established, and then the steps of adaptive filtering algorithm based on fractional Fourier transform are theoretically analyzed. Finally, the anti-interference performance of this method is simulated and studied. It can be seen from the simulation results that when the signal-to-interference ratio is −60dB, the adaptive algorithm based on fractional Fourier transform can still achieve signal reception under strong interference. The research in this paper can provide some reference for the anti-interference design of emergency rescue terminal.