基于Kappa制导律,提出了一种虚拟目标机动变轨方式。Kappa控制算法应用于大气层内的中制导,可使末段开始的导弹速度最大。利用Kappa制导律攻击虚拟目标,可实现各种变轨弹道。通过空间圆确定虚拟目标点的速度方向,减小了目标切换引起的指令跳变。采用二阶平滑方式,使过载指令平滑过渡。最后,通过六自由度仿真验证了提出的制导的有效性。

Based on kappa guidance law, this paper proposes a maneuvering orbit change mode of virtual target. Kappa control algorithm is applied to the midcourse guidance in the atmosphere to maximize the missile speed at the beginning of the terminal stage. Using kappa guidance law to attack virtual targets, various trajectory changes can be realized. The speed direction of the virtual target point is determined by the spatial circle, which reduces the command jump caused by target switching. The second-order smoothing method is adopted to make the overload command transition smoothly. Finally, the effectiveness of the proposed guidance is verified by six degree of freedom simulation.