考虑到星载雷达与机载雷达系统的区别,本文建立了星载双基地雷达杂波空时二维模型.分析了星载情况下双基地雷达的空间几何关系,得到了杂波等距离环的解析解.同时考虑了地球自转带来的新的多普勒分量.最后,利用该建模方法仿真和分析了几种双基地场景下杂波背脊线.本建模方法可以用来分析各种星载双基地雷达配置下的杂波特性,是研究双基地配置和杂波抑制算法的基础.

This paper presents clutter space-time modeling method of bistatic space based radr(B-SBR).We analyze the bistatic geometry and obtain the analytic resolutions of clutter isorange contours.New Doppler frequency induced by earth’s rotation is considered.Finally,clutter angle-doppler traces for some scenarios are plotted and discusses based on the model.The clutter model can be used to analyze clutter space-time characteristics for different bistatic configurations,and develop clutter suppression methods.