反隐身防空导弹制导方法研究

Research on Guidance of Anti-stealth-air-defense Missile Based on Virtual Target

由于目标的雷达散射截面积(RCS)存在各向异性,即在不同观测方向上目标的RCS不同,RCS的大小直接影响导弹导引头的探测距离。研究防空导弹打击隐身目标的问题,为使导弹导引头探测目标的距离达到最远以达到良好的反隐身效果,导弹从隐身目标RCS最大的方向探测并跟踪目标。这就给反隐身防空导弹的制导律提出了入射角要求。本文依据该需求,根据导弹和目标的实时运动轨迹,设计一种基于比例导引律和带终端角度约束导引律的制导方法。仿真结果表明:该制导律可以实现以特定的入射角攻击目标,从而提高导弹的反隐身效果。

There exist anisotropic for the RCS of the target in direction, that is to say, in different observation direction, the RCS of the target is different, which affects the detection distance of the missile directly. In order to make the detection distance of the missile reach the furthest and achieve precise anti-stealth effect, the missile is made to track stealth target from the direction where the RCS of the target is the largest. The incident angle is put forward for the middle guidance law of the anti-stealth-air-defense missile. Considering the question of air-defense missile attacking the stealth target, the guidance is designed on the vertical plane according to the movement of the missile and the target, which is based on the proportional navigation guidance law and a guidance law with terminal impact angle constraints. At last the simulation has been made, and the results show that the guidance law can be used to attack the target in a specific incident angle, as a result, the anti-stealth effect of the missile is proved.