Nonuniform stretch processing for the range profile of a target with micro-motion

作     者：CHEN Hangyong**, JIANG Weidong, LIU Yongxiang, LI Xiang and GUO Guirong(Institute of Space Electronics Information Technology, National University of Defense Technology, Chang Sha 410073, China) 

作者机构：Institute of Space Electronics Information Technology National University of Defense Technology Chang Sha 410073 China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2006年第16卷第11期

页      面：1205-1213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] 0805[工学-材料科学与工程（可授工学、理学学位）] 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] 0702[理学-物理学] 

基　　金：Supported by National Natural Science Foundation of China (Grant No .60402032) 

主　　题：synthetic range profile micro-motion stretch processing Doppler effect. 

摘      要：Complex motions such as micro-motions induce complex range-Doppler coupling effect in radar imaging. Hence, it is a challenge to reconstruct a clear range profile of a target with micro-motion. Stretch processing with fine motion compensation cannot perform well while it ties to eliminate the distortion of range profile caused by Doppler effect, because it is difficult to accurately estimate each scattering center velocity during coherent processing interval. Based on nonuniform stretch processing (NSP), a new technology is proposed to decouple range, time and Doppler and then achieve range profile of target with micro-motion. The new technology uses a new synthetic wide-band waveform and has an innovative mathematic interpretation. Statistical properties of the new approach are primarily examined. Typical models of target with micro-motion for high resolution radar are presented. Monte Carlo simulations demonstrate the performance of the new technology and the simulation results confirm our expectations.