%0 Journal Article
%T A Modified Method of SAR Moving Target Detection and Imaging Based on Fractional Fourier Transform<br>一种改进的基于FrFT的SAR运动目标检测与成像方法
%A Deng Bin
%A Qin Yu-liang
%A Wang Hong-qiang
%A Li Xiang
%A <br>邓彬
%A 秦玉亮
%A 王宏强
%A 黎湘
%J 电子与信息学报
%D 2008
%I 
%X To overcome the shortcomings of the conventional method of SAR moving target detection and imaging based on the Fractional Fourier Transform(FrFT), a modified method, which combines filtering in fractional Fourier domain, reassigned spectrogram and CLEAN, is presented for the detection, parameter estimation and imaging of moving targets. This method is able to estimate precisely the initial Doppler frequency and the Doppler centroid, and to distinguish between multiple targets lying in the same line in the time-frequency plane. The transform formulas between FrFT numeral results and Doppler parameters are also given in the paper. Simulated results prove the validity of the approach.
%K SAR
%K GMTI
%K Fractional Fourier transform
%K Spectrogram<br>合成孔径雷达
%K 运动目标检测与成像
%K 分数阶Fourier变换
%K 谱图
%K 改进
%K FrFT
%K 运动目标检测
%K 成像方法
%K Fractional
%K Fourier
%K Transform
%K Based
%K Imaging
%K Moving
%K Target
%K Detection
%K Method
%K of
%K 有效性
%K 仿真结果
%K 转换公式
%K 多普勒参数
%K 量纲
%K 数值计算
%K 直线
%K 时频平面
%K 分辨
%K 中心频率
%K 起始频率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=EBE05111C6A3491170697E66B0E0F516&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=0B39A22176CE99FB&sid=377D325742940769&eid=6C069F4B248105A5&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=13