STLFMCW signal detection based on cyclic fractional Fourier transform method

摘要

This paper studies the linear frequency modulated continuous wave (LFMCW) signal distribution in fractional Fourier transform (FRFT) and Cyclic FRFT domain (CFRFD). A cyclic fractional Fourier transform processing method (CFRFT) is proposed, which can accumulate the signal energy in CFRFD. The simulation results show capability and effectiveness of CFRFT in detecting a kind of typical LFMCW signal— symmetrical triangle linear frequency modulation continuous wave (STLFMCW) signal in low SNR conditions.