利用脉冲雷达信号作为辐射源的机载非合作双基地雷达系统相对于传统机载非合作双基地雷达系统更具优势,但同时也面临杂波对目标检测造成影响的问题。首先,针对固定雷达发射站作为辐射源的机载非合作双基地雷达杂波进行研究,建立杂波几何模型;然后,分析了正侧视阵、斜视阵、前视阵三种阵面构型条件下杂波的空时二维特性;最后,介绍空时自适应处理(STAP)算法,通过信杂噪比改善因子仿真验证了STAP方法抑制杂波的可行性,为之后的机载非合作双基地雷达目标检测提供了前提。

Airborne non-cooperative bistatic radar system based on pulsed radar signals as radiation sources has more advantages than traditional airborne non-cooperative bistatic radar system, but it also faces the problem of clutter affecting target detection. Firstly, the airborne non-cooperative bistatic radar clutter with the fixed radar transmitting station as the emitter is studied and the clutter geometry model is established. Secondly, the space-time two-dimensional characteristics of the clutter are analyzed for sidelooking array, slant-looking array and forward-looking array. Finally, the space-time adaptive processing (STAP) algorithm is introduced and the feasibility of the method of suppressing clutter is verified through improvement factor simulation, which provide a foundation for the target detection of airborne non-cooperative bistatic radar.

TN957.5