Micro-Doppler feature extraction method for vibration targets based on the segmental intrinsic chirp component decomposition

The Journal of Engineering

Kang Wenwu¹  Dong Xiao¹  Zhang Yunhua¹ 

[1] The Key Laboratory of Microwave Remote Sensing, Chinese Academy of Sciences;

关键词: time-frequency analysis;    doppler radar;    feature extraction;    fourier transforms;    radar interferometry;    radar signal processing;    radar clutter;    radar antennas;    vibrations;    three-antenna interferometric radar system;    vibration targets;    microdoppler features;    time–frequency diagram;    short-time fourier transform;    echo signal;    interferometric processing;    novel microdoppler feature extraction method;    segmental intrinsic chirp component decomposition;    microdoppler parameters;   

DOI  :  10.1049/joe.2019.0387

来源: DOAJ

【 摘 要 】

Based on the three-antenna interferometric radar system, a novel micro-Doppler feature extraction method for vibration targets is proposed in this study. First, the theory of interferometric processing of echo signal for vibration targets is introduced and explained. Second, short-time Fourier transform is conducted with the time–frequency diagram of echo signal obtained. Then, the signals received by three-antenna model are decomposed based on the segmental intrinsic chirp component decomposition. Finally, the 2D trajectory of vibration target is reconstructed and its micro-Doppler features are effectively extracted via the interferometric phase. Besides, the micro-Doppler parameters can also be estimated with the method. Two simulation experiments are conducted to validate the proposed method.

【 授权许可】

Unknown