高超声速飞行器俯冲机动最优制导方法

为解决高超声速飞行器俯冲段精确制导与机动突防问题，研究了机动突防最优制导方法。针对零化视线角速率降低突防性能的问题，在俯冲平面及转弯平面内分别设计了正弦形式的视线角参考运动，同时为进一步实现俯冲精确制导，以落速最大为性能指标利用最优控制对其进行跟踪，引入了伪控制量以简化最优制导问题的求解，最后分析了该方法的稳定性及制导性能。以CAV-H为例进行仿真分析，仿真结果表明该方法能够实现机动飞行，且能够高精度地满足终端落角及落点约束，可为高超声速飞行器俯冲段精确制导及机动突防提供参考。

Optimal Guidance with Maneuver for Hypersonic Vehicle in Dive Phase

To solve precise guidance and maneuver penetration problems for hypersonic vehicle in dive phase, the optimal guidance method with maneuver was proposed. As to the problem that traditional guidance law based on zero-LOS angle rate can debase penetrative ability, it designed reference motion for the rate in diving-plane and turning-plane. Besides, in order to enhance penetrative ability farther and realize precise guidance, it taken advantage of optimal control with the optimal index of maximum terminal velocity to track the LOS angle rate, and pseudo control variable was introduced to simplify the resolution of optimal control problem. At last, it analyzed the guidance capability for this method. The results of CAV-H vehicle test show that the algorithm can realize maneuvering flight, and can satisfy terminal impact point and falling angle constraints. Therefore, they can offer references for high precision guidance and maneuver penetration for hypersonic vehicle in dive phase.