军事信息栅格级联失效模型及鲁棒性策略研究

Research on military information grid cascading failure model and robustness strategy

构建了军事信息栅格(military information grid,MIG)级联失效模型,深入分析MIG级联失效特性,并在此基础上提出了鲁棒性建设策略。基于相互依存网络理论分析模型,将MIG划分为通信基础网和信息服务网,改进了节点介数计算方法,突出了服务关系对通信流量的影响,并定义了节点失效判定准则,研究了失效节点通信负荷和信息服务负荷重分配规律及因此造成的失效传播原理。通过引入成本惩罚函数和砥柱节点的概念,构建数学模型,研究并提出了兼顾投入成本和抗毁效益的建设策略。仿真实验结果表明,少量砥柱节点能力的加强,即可有效提高全栅格体系的抗级联失效特性。

A model of military information grid cascading failure is constructed, and the characteristic of military information grid （MIG） cascading failure is thoroughly analyzed, based on which a robustness strategy of MIG building is proposed. Based on the theoretic analysis model of interdependence networks, MIG is divided into communicating basic net and information service net. The algorithm of betweenness is improved, so affec- tion of service relation to communicating flux could be validated. The proposed model defines the judging regula- tion of node cascading, and studies the reassigning rules of communicating load and service load of cascading nodes, so the principle of cascading spread can be studied too. By introducing the punish function of cost and the concept of mainstay nodes, a mathematical model for studying robustness strategy of MIG building is built, which gives consideration to investment cost and resistance-failure. Simulation experiments show that, resist- ance-cascading failure of MIG can be prompted obviously just by enhancing capacity of a few of mainstay nodes.