%A Yong WANG, Xingyu ZHOU, Xiaofei LU, Yajun LI %T An approach of motion compensation and ISAR imaging for micro-motion targets %0 Journal Article %D 2021 %J Journal of Systems Engineering and Electronics %R 10.23919/JSEE.2021.000008 %P 68-80 %V 32 %N 1 %U {https://www.jseepub.com/CN/abstract/article_7874.shtml} %8 2021-02-25 %X

Inverse synthetic aperture radar (ISAR) imaging of the target with the non-rigid body is very important in the field of radar signal processing. In this paper, a motion compensation method combined with the preprocessing and global technique is proposed to reduce the influence of micro-motion components in the fast time domain, and the micro-Doppler (m-D) signal in the slow time domain is separated by the improved complex-valued empirical-mode decomposition (CEMD) algorithm, which makes the m-D signal more effectively distinguishable from the signal for the main body by translating the target to the Doppler center. Then, a better focused ISAR image of the target with the non-rigid body can be obtained consequently. Results of the simulated and raw data demonstrate the effectiveness of the algorithm.