基于巨大飞行高度落差的机载双基雷达杂波模拟与仿真

Modeling and Analysis of Clutter Based on Bistatic Airborne Radar of Huge Altitude Drop

目前的机载双基雷达研究方向主要是基于同一水平面飞行的,而针对巨大飞行高度落差的双基飞行几何构型研究很少。在给出四种典型飞行模式的基础上,重点分析了双基飞行高度具有巨大落差时的杂波功率谱起伏形状,以及垂直基线模式下的杂波特征谱图形。仿真结果表明了随着基线横向长度的增大,杂波的距离依赖性由强变弱。而当高度落差确定,基线垂直,同向飞行时的杂波自由度低于不同向飞行杂波自由度。

The bistatic airborne radar research is based on the same horizontal plane flight, while rare of re- search on geometric configuration of bistatic flight for huge altitude drop. On the basis of four typical airplane mode, which selectively analyze radar clutter power spectrum with huge altitude drop of bistatic flight and charac- teristic spectrum of clutter on vertical baseline mode. Simulations results indicate that with the baseline lateral length increasing, the distance dependence of clutter from strong to weak; while when altitude drop determining the baseline verticality, the degree of freedom of clutter on homodromous flight lower than heterodromous.