Analysis of inverse synthetic aperture radar imaging in the presence of time-varying plasma sheath

作     者：Yaocong XIE Xiaoping LI Fangfang SHEN Bowen BAI Yanming LIU Xuyang CHEN Lei SHI 谢曜聪;李小平;沈方芳;白博文;刘彦明;陈旭阳;石磊

作者机构：School of Aerospace Science and TechnologyXidian UniversityXi'an 710071People's Republic of China 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2022年第24卷第3期

页      面：19-32页

核心收录：

学科分类：0810[工学-信息与通信工程] 080904[工学-电磁场与微波技术] 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] 0701[理学-数学] 0811[工学-控制科学与工程] 0702[理学-物理学] 

基　　金：supported in part by National Natural Science Foundation of China(Nos.61971330,61701381,and 61627901) in part by the Natural Science Basic Research Plan in Shaanxi Province of China(No.2019JM-177) in part by the Chinese Postdoctoral Science Foundation 

主　　题：ISAR imaging plasma sheath time-varying transmission line matrix defocusing 

摘      要：The plasma sheath can induce radar signal modulation,causing not only ineffective target detection,but also defocusing in inverse synthetic aperture radar(ISAR)*** this paper,through establishing radar echo models of the reentry object enveloped with time-varying plasma sheath,we simulated the defocusing of ISAR images in typical *** results suggested that the ISAR defocusing is caused by false scatterings,upon which the false scatterings’formation mechanism and distribution property are analyzed and *** range of false scattering correlates with the electron density fluctuation *** combined value of the electron density fluctuation and the pulse repetition frequency jointly determines the Doppler of false *** measurement metrics including peak signal-to-noise ratio and structural similarity are used to evaluate the influence of ISAR imaging.