体系作战信息流转层级网络级联失效模型

Cascading failure model for systematic operations information flowing layered network

为探索体系作战信息流转级联失效的特点规律,抽象了作战信息流转的层级网络结构,建立了基于任务约束的级联失效模型。提出由物理层和逻辑层组成的信息流转分层网络结构,分析了网络层间的级联失效影响关系;引入任务协作因子改进节点介数计算方法,根据作战任务动态生成信息流转层级网络结构,考虑节点功能属性和信息交互方向,设计负荷重分配策略及失效判定条件,采用平均失效规模度量级联失效影响。以空中进攻作战为例进行仿真分析。结果表明,节点具有较小初始负荷及容量的网络,更易产生快速显著的级联失效;失效节点类型不同,所产生级联失效的规模和持续时间具有较大差异。仿真结果验证了模型的可行性与有效性,可为网络结构优化设计、安全防护等提供有益借鉴。

To explore cascading failure characteristics and laws of information flowing in systematic operations, this paper abstracted operational information flowing layered network structure, and built cascading failure model restricted by task. Firstly, it proposed layered network structure consisting of physical and logical layer, and analyzed cascading failure affection relationship between different layers. Secondly, it improved node betweenness calculation method by leading task cooperation factor, and generated dynamically information flowing layered network according to operational task. Considering node attributes and information alternation direction, it designed load redistribution strategies and failure judging conditions. It selected average failure size to measure cascading failure impact. Finally, it took aviation aggressive operations as simulation example. The results show that network with small initial load and capacity is more likely to produce a rapid and significant cascading failure and the scale and duration of cascading failure caused by different failure node types are quite different. The simulation results validate feasibility and effectiveness of the model, which can provide useful reference for network structure optimization design and safety protection.