反解法在再入机动弹道设计中的应用研究

Application Research on Inverse Calculation Method for Reentry Maneuverable Trajectory

简要分析了一般的再入机动弹道设计方法,即正解法。针对正解法对模型依赖性强和对初值非常敏感的问题,提出了一种基于误差补偿的机动弹道设计方法——反解法。该方法从弹道终端出发反解弹道,将计算结果误差转化为机动点参数误差,再通过关机点或中制导的调整进行误差补偿,从而有利于命中精度和打击效果的实现。仿真结果表明,该方法计算简便,对工程应用有一定的参考价值。

A general method of reentry maneuverable trajectory design is analyzed briefly. As the general method depended heavily on mathematical model and is sensitive for initial value, an inverse cal- culation method is presented. The method is based on the improved plane ballistic model and adopts the idea of error compensation. By calculating the trajectory inversely, the computational error of end point is moved to maneuvering point. Then the error can be compensated by adjusting the parameter of shutdown point or mid-course guidance. The result of simulation shows that the method is easy, feasible and effec- tlve.