基于马尔可夫链的动态故障树分析方法

对于状态较多的动态故障树(DFTA)转换为连续参数的马尔可夫链后,可以将状态转移图分解成若干条状态转移链,根据不同的链长,分别推导出概率计算公式。在应用时只要套用这些公式,然后将各条链的概率相加,便可得到DFTA的失效概率。对于给出的状态转移图,提出并证明了基于连续参数的马尔可夫链的DFTA分析的可靠性计算（解析求解）公式。与传统的方法相比,该方法可以避免直接求解微分方程的复杂运算,便于工程实际应用。     

一类多相群补码波形及其应用

本文以Frank码矩阵的复正交性为基础设计了一类相互正交的多相群补码波形,最后将这类多相群补码用于消除雷达网中的同频互干扰和脉冲雷达中的距离模糊。     

火炸药综合感度评估方法研究

火炸药的安全性是由综合感度给出的,因而火炸药综合感度评估的有效性极其重要。采用多元统计分析方法中的雷达图法对火炸药的多种感度进行综合分析,并利用偏心距对雷达图进行修正后,提出了一种新的火炸药综合感度评估方法——修正雷达图法。利用该方法对常用的21种火炸药进行综合感度评估,并与BZA-1法的数据进行对比,分析表明该方法对火炸药综合感度的分辨率更高。     

Study on System Failure Probability Model Based on Dynamic Fault Tree

Aiming at the characteristics of complex logic relation and multiple dynamic gates in system, its failure probabil- ity model is established based on dynamic fault tree. For the multi-state dynamic fault tree, it can be transferred into Markov chain with continuous parameters. The state transfer diagram can be decomposed into several state transfer chains, and the failure probability models can be derived according to the lengths of the chains. Then, the failure probability of the dynamic fault tree analysis （DFTA） can be obtained by adding each chain＇ s probability. The failure probability calculation of DFTA based on the continuous parameter Markov chain is proposed and proved. Given an example, the analytic method is compared with the conventional methods which have to solve the differential equation. It is known from the results that the analytic method can be applied to engineering easily.