杂波谱的建模与实时仿真

对于雷达制导的防空导弹武器系统，在导弹、目标相对飞行过程中，导弹接收机接收到的目标信号通常是与地杂波、海杂波或多路径信号混杂在一起的，它们是影响导弹武器低空制导性能的主要因素之一。对于射频环境仿真系统，为了评价导弹武器系统在多重杂波环境下攻击低空目标的能力，在对目标仿真的同时，也应具有模拟杂波环境的能力。故必须对杂波干扰进行建模并射频复现。文中给出了对杂波建模的基本方法，以及实现杂波谱实时计算所采取的措施。最后用实例对模型加以验证，并给出了实时仿真的结果。

Modeling and Real-time Simulation for Clutter Spectrum

For the antiaircraft missile weapon system using radar homing, the target signal that received by missile receiver is always mixed with ground echo, sea echo or multi -path signal in the relative flight process between missile and target. And they are important factors that affect the low - altitude guidance performance of missile weapons. In regard to the radio frequency simulation system, in order to evaluate the capability of attacking low - altitude targets under complex clutter environment for missile weapon system, it also should have the capability of simulating the clutter environment at the same time of target simulation. So, it must do modeling and be realized in RF towards clutter jam. This paper gives a basic method for echo modeling, as well as measures adopted for real - time computing these clutter spectrums. The model is verified and the results of real - time simulation are given at the end.