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为了研究空天混合双基地雷达中的杂波特性和杂波抑制算法,提高对慢速目标的检测性能,该文分析了空天混合双基地雷达的几何关系,获得杂波等距离环的解析解并建立了杂波模型。同时基于该模型,对几种特定空间几何配置下的杂波等距离环和杂波角度Doppler线进行了仿真分析。结果表明混合模式的杂波特性对卫星平台速度和位置更加敏感,合理的双基地几何配置可以提高空时二维信号处理的性能,达到更好的最小可检测速度。
In order to study the clutter characteristics and clutter suppression algorithm in air-ground hybrid bistatic radar and improve the detection performance on slow targets, the paper analyzes the geometric relation of air-ground hybrid bistatic radar and obtains clutter equidistance ring Analytical solution and the establishment of a clutter model. At the same time, based on the model, several kinds of Doppler lines, such as clutter equidistance ring and clutter angle, were simulated and analyzed under some special geometrical configuration of space. The results show that the clutter characteristics of hybrid mode are more sensitive to the velocity and position of the satellite platform. The rational bistatic geometry configuration can improve the performance of space-time two-dimensional signal processing and achieve a better minimum detectable speed.