天基双基地雷达杂波仿真技术研究

在天基双基地雷达系统配置下,研究了杂波建模的方法。根据双基地雷达分辨率通常低于单基地系统的特点,提出一种基于单基地散射单元划分的双基地杂波仿真方法,以解决天基情况下地球曲率带来的散射单元划分困难的问题。给出了天基双基地杂波仿真流程,具体介绍了散射单元划分、坐标转换以及相关杂波合成等关键步骤。仿真结果验证了该方法的有效性。

Study on Clutter Simulation Technology for Space-based Bistatic Radars

Clutter simulation technology was studied under space-based bistatic radar(SBBR) configuration. Due to the existence of earth curvature,the isometry ellipse model is not true any more. Considering that the range resolution of bistatic system was usually lower than that of the monostatic system,clutter simulation method of SBBR based on equidistant ring division of monostatic system was proposed,which was difficult due to the earth curvature in space-based systems. Simulation procedures were described,including the key steps of clutter cell division,coordinate transformation and coherent synthesization of clutter cell echoes. The validation of the method is proved by the simulation results.