A NEW METHOD FOR TARGET DETECTION OF MMW RADAR

摘要

In the modern MMW radar detection system, the problem on interference of cross-terms became extremely severe. In the paper, we proposed a new method named p_0 order Choi-Williams-distribution (p_0-CWD) transform based on the fractional Fourier transform (FRFT). The analysis of auto-terms and cross-terms of p_0-CWD shows the result that the interference of cross-terms could be zero under certain condition. The algorithm avoids time-consuming coherent processing and sophisticated motion compensation due to the implementation of FRFT. The performance of the method is evaluated in terms of Sig-nal-to-Noise ratio (SNR) of output signal. The simulation results revealed 0.5m resolution even in the case of low SNR of input signal equal to -9dB.