Parameter estimation for rigid body after micro-Doppler removal based on L-statistics in the radar analysis  

作　　者：Yong Wang Jian Kang 

机构地区：[1]School of Electronics and Information Engineering,Harbin Institute of Technology

出　　处：《Journal of Systems Engineering and Electronics》2015年第3期457-467,共11页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(61471149);the Program for New Century Excellent Talents in University(NCET-12-0149);the National Science Foundation for Postdoctoral Scientists of China(2013M540292);the postdoctoral scienceresearch developmental foundation of Heilongjiang province(LBHQ11092);the Heilongjiang Postdoctoral Specialized Research Fund

摘　　要：In traditional inverse synthetic aperture radar （ISAR） imaging of moving targets with rotational parts, the micro-Doppler （m-D） effects caused by the rotational parts influence the quality of the radar images. Recently, L. Stankovic proposed an m-D removal method based on L-statistics, which has been proved effective and simple. The algorithm can extract the m-D effects according to different behaviors of signals induced by rotational parts and rigid bodies in time-frequency （T-F） domain. However, by removing m-D effects, some useful short time Fourier transform （STFT） samples of rigid bodies are also extracted, which induces the side lobe problem of rigid bodies. A parameter estimation method for rigid bodies after m-D removal is proposed, which can accurately re- cover rigid bodies and avoid the side lobe problem by only using m-D removal. Simulations are given to validate the effectiveness of the proposed method.In traditional inverse synthetic aperture radar （ISAR） imaging of moving targets with rotational parts, the micro-Doppler （m-D） effects caused by the rotational parts influence the quality of the radar images. Recently, L. Stankovic proposed an m-D removal method based on L-statistics, which has been proved effective and simple. The algorithm can extract the m-D effects according to different behaviors of signals induced by rotational parts and rigid bodies in time-frequency （T-F） domain. However, by removing m-D effects, some useful short time Fourier transform （STFT） samples of rigid bodies are also extracted, which induces the side lobe problem of rigid bodies. A parameter estimation method for rigid bodies after m-D removal is proposed, which can accurately re- cover rigid bodies and avoid the side lobe problem by only using m-D removal. Simulations are given to validate the effectiveness of the proposed method.

关 键 词：parameter estimation L-STATISTICS micro-Doppler （m-D） radar imaging. 

分 类 号：TN957.52[电子电信—信号与信息处理]