作　　者： ; ; ;

机构地区： 中国科学院电子学研究所

出　　处： 《系统工程与电子技术》 2006年第2期231-233,305,共4页

摘　　要： 通过建立合适的双基坐标系,得出双基雷达的等距离和曲线方程是一族椭圆。在此基础上,研究了3种不同的双基几何配置时的方位-多普勒杂波轨迹特性和功率谱特性,并与单基情形进行对比,从而揭示了双基杂波的非静态特性。研究了杂波特性对STAP处理性能的影响,双基杂波的非静态特性使得STAP处理器的杂波频谱变宽,MDV变大,处理性能大大恶化,必须进行有效地补偿。 By establishing proper bistatic coordinates, a conclusion is obtained that equidistance curves of bistatic radar are a series of ellipses. On the basis of this, the azimuth-Doppler clutter trajectories and clutter power spectra of three different bistatic geometries are studied. Compared with monostatic radar, the non-stationary nature of bistatic clutter is revealed. Finally, the influence of clutter characteristics on STAP is investigated, and the conclusion drawn is that the non-stationary nature of bistatic clutter broadens the clutter spectra of SWAP processor, increases MDV and degrades the processing performances. Therefore, some mitigating measures must be taken.

关 键 词： 机载双基雷达 自适应处理 动目标检测 杂波特性

领　　域： [电子电信] [电子电信]