An approach of motion compensation and ISAR imaging for micro-motion targets

作     者：WANG Yong ZHOU Xingyu LU Xiaofei LI Yajun WANG Yong;ZHOU Xingyu;LU Xiaofei;LI Yajun

作者机构：School of Electronics and Information EngineeringHarbin Institute of TechnologyHarbin 150001China Jiuquan Satellite Launch CenterJiuquan 732750China Shanghai Radio Equipment Research InstituteShanghai 201109China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2021年第32卷第1期

页      面：68-80页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 081105[工学-导航、制导与控制] 081001[工学-通信与信息系统] 081002[工学-信号与信息处理] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程] 

基　　金：supported by the National Natural Science Foundation of China(61871146) the Fundamental Research Funds for the Central Universities the State Key Laboratory of Millimeter Waves(K202022) 

主　　题：inverse synthetic aperture radar(ISAR) micro-Doppler(m-D) motion compensation complex-valued empiricalmode decomposition(CEMD) 

摘      要：Inverse synthetic aperture radar(ISAR)imaging of the target with the non-rigid body is very important in the field of radar signal *** 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 ***,a better focused ISAR image of the target with the non-rigid body can be obtained *** of the simulated and raw data demonstrate the effectiveness of the algorithm.