子弹散布中心正态总体分布参数的融合估计

对带有均匀抛撒子弹头的常规导弹的命中精度评定 ,其关键在于子弹散布中心分布参数的准确估计。通常的方法由每次试验的子弹落点数据获得一个子弹散布中心 ,再由少数的几个散布中心数据、运用经典的统计方法求散布中心的正态总体分布参数 ,其不足之处在于小样本条件下采伪的概率很高。考虑到子弹散布中心只是子弹落点数据的一阶矩 ,并不能充分表达子弹落点数据所蕴含的信息量 ,而子弹落点个数远远大于导弹试验的次数 ,子弹落点所蕴含的信息比子弹散布中心所蕴含的信息要丰富得多。鉴于此 ,研究了一种子弹散布中心总体分布参数融合估计的新方法

Fusion Estimation of Normal Distribution Parameter of the Sub-missile Dispersion Center

On evaluating the hitting precision of a missile which throws sub missiles, it is a key question to estimate the normal distribution parameter of the sub missile dispersion center. The usual method is, to find a sub missile disper firstsion center first from each group data of the sub missile's falling point coordinate, then to estimate the parameters according to a few data of dispersion center using the classical statistic method. Its shortcomings are the high probability to make a wrong conclusion. Considering that the sub missile dispersion center, which cannot sufficiently express the information contained in the sub missile falling point data group, is only its first moment, in this paper a new method on fusion estimating the distribution parameter is researched.