导弹飞行时安全系统保险失效时间的分布模型

The Safety Failure Time Distribution Model of the Safety System of Missile in Flight

根据安全系统在导弹飞行过程中受外界环境信息的冲击而解除保险这一物理过程，推断了安全系统的保险失效时间服从截尾Ｇａｍ ｍ ａ 分布模型，并讨论了在保险失效建模和评估等统计过程中非常有用的截尾Ｇａｍ ｍ ａ 分布的一些特性。

The safety failure of the safety system of missile in flight occurs generally because the system is subject to random “information shocks”around From the safety failure mechanism,we conclude that the safety failure time of the safety system obeys a truncation Gamma distribution model In addition,we discuss some characteristics of truncation Gamma distribution which are helpful to the assessment and modeling of the safety failure process \;