基于多通道SAR系统的ATI-RPCA地面动目标指示方法  

ATI-RPCA GMTI method based on multi-channel SAR system

作　　者：傅东宁 廖桂生[1] 黄岩 刘军 FU Dongning;LIAO Guisheng;HUANG Yan;LIU Jun(National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China;State Key Lab of Millimeter Waves, Southeast University, Nanjing 210096, China;Unit 63768 of the PLA, Xi’an 710600, China)

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071 [2]东南大学毫米波国家重点实验室,江苏南京210096 [3]中国人民解放军63768部队,陕西西安710600

出　　处：《系统工程与电子技术》2021年第1期48-54,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(61621005,61901112);江苏省自然科学基金(BK20190330);装备发展部领域基金(61404130223)资助课题。

摘　　要：针对强杂波背景下的多通道合成孔径雷达(multi-channel synthetic aperture radar,MC-SAR)系统,结合沿航迹干涉(along-track interferometry,ATI)方法和稳健的主成分分析(robust principal component analysis,RPCA)方法,提出一种ATI-RPCA的地面动目标指示方法。与传统的ATI方法相比,该方法可以提供更稳健的性能,但增加了一定的计算复杂度;与经典的RPCA算法相比,该方法可以降低虚警概率(probability of false alarm,PFA)并降低运算复杂度。总体而言,所提方法提供了较为稳健快速的目标检测性能,最后通过将所提方法应用到实测三通道SAR数据中,得到的结果与本文的理论分析一致。An along-track interferometry robust principal component analysis(ATI-RPCA)method for ground moving target indication(GMTI)is proposed in the multi-channel synthetic aperture radar(MC-SAR)system by combining ATI and RPCA method under strong clutter background.The proposed method can provide more robust performance by comparing with the traditional ATI method,but it increases the computational complexity.Additionally,the method can decrease the probability of false alarm(PFA)and greatly reduce the computational complexity compared with the conventional RPCA algorithm.In general,the proposed method realizes relative robus target dection performance.The experimental results by applying the proposed method into a set of measured three-channel SAR data are consistent with the analysis presented in this paper.

关 键 词：多通道合成孔径雷达 地面动目标指示 沿航迹干涉稳健主成分分析方法 虚警概率 

分 类 号：TN911.7[电子电信—通信与信息系统]