摘要
针对利用非合作外辐射源对空中运动目标进行成像这种新体制无源雷达系统,提出了一种基于二维傅里叶变换进行目标重建的分布式无源雷达成像算法.该算法通过接收来自多个外辐射源的回波数据,经过坐标变换和二维插值运算,直接在接收数据空间利用二维傅里叶变换重建目标的散射函数分布.分别选取了12个电视台信号在目标转动30°和10个电视台信号在目标转动11°两种典型情况进行了仿真实验,结果验证了算法的可行性.
An imaging algorithm based on the two-dimensional Fourier transform is proposed for target imaging in a new type of passive radar system which uses multiple non-cooperative external illuminators as transmitters. In this algorithm the target scattering funetion could be reeonstructed from the echo data via coordinate conversion, two-dimensional interpolation and two-dimensional Fourier transform. We select two circumstanees for eomputer simulation： 12 TV station signals are available when the target rotated 30 degrees and 10 TV station signals were available when the target rotated 11 degrees, respectively. Simulation results show the effectiveness of the proposed algorithm.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2006年第6期907-910,930,共5页
Journal of Xidian University
基金
国家自然科学基金资助项目(60472087)
国家部委预研基金资助项目(51407010204DZ0125
51431030105ZS0104)
关键词
外辐射源
无源雷达成像
坐标变换
二维插值
external illuminator ； passive radar imaging ； coordinate conversion； twodimensional interpolation
