考虑防御系统延迟使其预测误差最大的突防弹道设计

对中段多脉冲机动突防弹道的设计问题进行了研究。采用的原理与方法有别于成熟的航天器多脉冲变轨,而是基于路径规划的思想对弹道设计问题简化。考虑敌方防御系统延迟,改进多脉冲点火模型,并基于变射面的思想对关机点参数进行了设计及优化。然后,从使敌方预测误差最大的角度提出评价函数,并利用遗传算法进行优化。最后,给出了一种同时满足导弹机动突防与打击精度要求的多脉冲弹道设计方法。从模型的可行性,方法的有效性、灵活性、迭代效率及精度等方面进行了仿真验证分析。在PC机仿真中,20 s内就设计出一条保证打击精度的中段突防弹道。结果表明,建立的模型是可行的,提出的突防弹道设计方法是快速有效的。

Penetration trajectory design based on defense system delay and maximum prediction errors in ballistic midcourse

This paper investigates the midcourse maneuver penetration trajectory design of ballistic missile, which is converted into path planning for simplification, and whose principle and method are different from the widely used ones. Considering the delay of the enemy’s defense system, a multi-pulse ignition model is developed, and the parameters of the burnout are designed and optimized based on the idea of the changeable launching plane. Then a developed evaluation function is adopted to maximize the prediction error of the enemy. The trajectories are further optimized by using the genetic algorithm. Meanwhile, a method of multi-pulse trajectory design is given, which satisfy the penetration and accuracy. The model, design and evaluation methods are verified through simulation from the aspects of feasibility, validity, flexibility, efficiency and precision. The PC simulation shows that an effective trajectory can be designed within 20s, and this method is effective and efficient.