弹道拦截的HP三维模型及自适应变结构制导律

Three-dimensional HP Guidance Model and Adaptive Variable Structure Control Guidance Law for Ballistic Trajectory Interception

HP(head pursuit)导引方法是将拦截器导引到目标轨道的前方进行拦截,拦截器的速度小于目标导弹的速度,从而可以解决拦截器导引头的气动加热问题,降低对拦截器探测设备的要求。在建立了HP导引方式的目标和拦截器三维制导模型基础上,对机动变速目标应用滑模变结构控制理论提出了一种自适应变结构制导算法,并设计了HP空间自适应变结构制导律,拦截器和目标导弹弹道拦截的三维数字仿真验证了模型和制导律的正确性。

A new guidance law of HP （bead pursuit） was developed to eliminate the perturbation of interceptor detection induced by high speed. The guidance law positioned the interceptor missile ahead of the target on its flight trajectory, and the interceptor speed was required to be lower than that of the target. Such guidance also relaxed the requirements from the interceptor seeker dome since it was not exposed to high aerodynamic heating. A HP three-dimensional guidance law was presented based on variable structure control theory, considering the kinematics of three-dimensional interception. Simulation results verified the rightness of the three-dimensional guidance model and the effectiveness of the guidance law.