空舰导弹俯冲弹道螺旋机动制导律研究

针对采用传统飞行弹道的空舰导弹在遭遇远程空舰导弹拦截时突防能力不强的问题，提出将降高段弹道改进为螺旋机动俯冲弹道的方案。分析了带落角约束的变结构制导律的设计过程，在此基础上，提出一种螺旋机动变结构制导律。该制导律不仅能引导空舰导弹实现螺旋机动俯冲弹道，而且能保证空舰导弹在降高段的末端稳定地过渡到低空巡航段。仿真结果表明，所提出的螺旋机动变结构制导律显著地提高了空舰导弹针对远程舰空导弹的突防概率。

Research on the Guidance Law for Spiral Maneuver of Air-to-ship Missile in Dive Trajectory Phase

For the penetration probability of air-to-ship missile adopting traditional flight trajectory is poor when it is intercepted by long-range ship-to-air missile, a scheme of modifying the descending phase trajectory to spiral maneuver dive trajectory is proposed. The design process of variable structure guidance law with terminal angular constraint is analyzed. On this basis, a kind of spiral maneuver variable structure guidance law is proposed. It can be used to guide the air-to-ship missile to realize the spiral maneuver dive trajectory, and ensure that the air-to-ship missile turns into the low altitude cruise phase in the end of the descending phase. The simulation results show that the proposed spiral maneuver variable structure guidance law improves remarkably the penetration probability of air-to-ship missile against the long-range ship-to-air missile.