中制导误差对反导拦截器末段拦截影响仿真分析

Simulation Analysis of the Influence of the Midcourse Guidance Error on Terminal Maneuverability Requirement of Exo-atmospheric Kinetic Vehicle

研究了中制导结束时目标速度估计误差和反导拦截器航向误差对末段拦截的影响。以THAAD为例进行分析,建立了末段拦截运动的简化模型,通过数字仿真研究了中制导误差与拦截器末段拦截所需机动能力之间的关系。仿真结果表明,提高中制导精度,通过综合考虑中制导目标速度估计精度和拦截器航向控制精度来选择适当的末段拦截入射角,将会降低拦截器的机动能力需求,从而改善末段拦截的性能。

In this paper,the influences of the target velocity measurement error and the kinetic kill vehicle(KKV)head- ing error on terminal maneuverability requirement of exo—atmospheric interceptor are analyzed.Numerical simulations based on the simplified terminal intercept model are performed to find out the relationship between the midcourse guid- ance error and the required maneuverability of the KKV.The model is built as a movement and geometrical relationship between the tactical ballistic missile(TBM)target and the KKV of THAAD by ignoring the effects of the gravitation and the extremely thin air.The results indicate that high precision of midcourse guidance and proper selection of inter- cept angle,which associates with both the target velocity measurement precision and the KKV heading precision,will reduce the terminal maneuverability requirement of terminal intercept.