对弹道导弹被动段拦截次数进行数学描述,通过椭圆弹道理论建立了两种典型TBM的被动段弹道,给出了根据当前时刻弹道导弹位置计算被动段可拦截次数的算法,通过两个典型的算例,得到了典型拦截目标被动段的拦截次数,对其影响因素进行了分析,结果表明,目标拦截次数与拦截系统的战技指标有很大关系,要使得混合部署时获得最多拦截次数,需要对高层、低层反导系统合理部署。

The post-boost intercepting number of TBM is depicted mathematically. By ellipse trajectory theory, two typical types of post-boost trajectory is established. Then, the algorithm to calculate the interceptable number according to the current position of TBM is given. Through two typical cases, the typical post-boost intercepting number is obtained, and some useful conclusions are drawn by analyzing the influence factors of the intercepting number and the result shows that the index of intercepting system has close relation to intercepting number, in order to obtain more intercepting numbers, the defenders should deploy the high and low anti-TBM system in reason.