Outdoor moving human micro-Doppler feature analysis with KU band radar

The micro-Doppler feature is one of the most prominent information for target classification and identification. This paper pays attention to the problem of outdoor moving human micro-Doppler feature extraction. The Hough transform (HT) is implemented to extract the moving trajectory in slow time-range image. An aligned matrix which contains the human micro-motion information is achieved by selecting the range cells around the trajectory. The micro-Doppler feature will be presented in the time-frequency plane by integrating the spectrum of the aligned matrix. The proposed method is validated by the experimental data recorded by our radar in Ku band.