基于理想视线制导的多导弹协同攻击策略

Cooperative Attack of Multiple Missiles with Ideal-line-of-sight-guidance

理想视线制导律是一种沿理想视线方向的、对终端相对位置与终端相对速度进行控制的弹道成型制导律。基于此制导律,提出了一种圆弧假设并推导了理想视线约束角度与飞行剩余时间之间的函数关系,设计了多导弹飞行时间协同控制系统。在此基础上,提出了针对低速目标的多导弹协同攻击策略。该制导策略通过调节各导弹终端理想视线与相对距离矢量方向夹角大小的方法,有效地减小了各导弹飞行时间之间的差额。仿真结果表明,所设计的制导策略可以很好地实现多导弹对固定目标的协同攻击并且有较强的容错性。

Ideal-line-of-sight-guidance is a trajectory shaping guidance law which makes the vector of relative positions and velocity the same direction as ideal-line-of-sight. This paper builds formulas about the direction of ideal-line-of-sight and time-to-go by supposing the constrained trajectory a circular arc,and the impact-time control system for multi-missile is designed by the formulas. Based on the above study,a new guidance scheme of cooperative attack is proposed,which can be applied to salvo attack of anti-ship missiles. The new guidance scheme can extremely reduce the difference in time-to-go between each missile by adjusting the included angle between ideal-line-of-sight and the vector of relative positions.Numerical simulations demonstrate the performance of the proposed guidance scheme in the accuracy of impact time and high robustness.