态势估计中的统计时间区间推理方法

Stochastic Time Interval Reasoning Method in Situation Assessment

在战场态势估计中 ,许多事件有一个持续过程 ,因此需要引入时间区间来表示这些事件发生的时间。态势估计中常常需要判断这些事件发生的时间顺序 ,而对事件发生的时间区间的推测或观测往往含有统计不确定性。利用似然比检验理论 ,建立了一种判别两个事件发生的不确定时间区间的顺序的新方法 ,并讨论了利用检验结果进行限制传播的方法 。

In tactical situation assessment, it is necessary to introduce time intervals to describe some events because the time in which these events happen can not be treated as time instant, and the deductions or observations obtained for these intervals are often imprecise. Hence, by using the theory of testing hypotheses through likelihood ratio calculation, a new method to decide the time intervals' sequence of two events with stochastic imprecision is developed. Also, the method of propagation of the imprecise time interval constraints is discussed, which enhances the ability of time relation descriotion and temporal reasoning in situation assessment.