水下监测系统的生存性模型研究

Research on Survivability Model of Underwater Monitoring System

面临复杂多变的海洋环境,水下检测系统的生存性问题,在设计阶段显得尤为突出。当水下监测系统遇到攻击、故障和事故时,生存性设计为系统服务仍满足用户需求提供了保障。根据应用环境中事件的概率分布和系统服务特性,水下监测系统的生存性量化为服务性能的数学期望。基于事件和系统状态的生存性模型利用状态转移矩阵模拟了生存性受事件影响的变化过程。通过对不同事件序列进行模型仿真,验证了模型的正确性及其对系统设计及生存性评估的重要作用。

Being faced with complicated marine environment, the survivability of an underwater monitoring system is sharp focused is the design stage. The survivability design provides guarantee for making services of the system meet user＇s requirements when the system encounters attacks, failures, and accidents et al. According to system characteristic and probability distribution of events in some environment, survivability of the system was quantified by mathematical expectation of services performance of the system. The changing process of influence of events on survivability performance was simulated by state transition matrix based on survivability models of events and state of the system. The simulated results by an example show that the established models are correct and have important effects for designing the system and evaluating survivability of the system.