【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。更多还原

【Abstract】 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 STAP processor,increases MDV and degrades the processing performances.Therefore,some mitigating measures must be taken.更多还原