摘要
研究有源欺骗干扰难以补偿距离弯曲差形成的相位差对距离弯曲差对SAR成像质量的影响。建立了含干扰SAR成像的矩阵模型,分析了高精度成像算法下有源欺骗干扰成像中距离弯曲差的累积散焦效应,比较了R-D算法和CS算法等不同成像算法在不同距离弯曲差区域内含干扰的保护目标区的成像性能。仿真验证了在大场景高精度成像算法下有源欺骗干扰的散焦效应,为改进SAR干扰对抗方式提供借鉴。
The jamming imaging effect caused by range curvature distinction under synthetic aperture radar （SAR） imaging is studied. The imaging matrix model is established firstly, which is simplified for signals and jamming. And the defocusing effect is analyzed in high-accuracy imaging algorithm, caused by range curvature distinction under SAR imaging. Then a comparison between R-D and CS imaging algorithms for utilizing in the regions of various range curvature distinctions including real targets and garnming is studied. Finally, simulation experiment verifies the defocusing effect coused by active deceptive jamming in wide scenes in the high accuracy imaging algorithm, which is conductive to an improvement in electronic counter measures （ECM） to SAR.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2009年第10期2343-2345,2475,共4页
Systems Engineering and Electronics
基金
国家科学自然基金(60802078)资助课题
关键词
合成孔径雷达
干扰
距离弯曲差
成像算法
synthetic aperture radar
jamming
range curvature distinction
imaging algorithm
