基于杀伤链的作战体系网络关键节点识别方法

Aiming at the problem that the key equipment is difficult to identify for operational system-of-systems (SoS) due to different equipment functions, complex interaction relationship and high confrontation, the analysis idea of kill chain is introduced to solve the above problem. Firstly, the method of constructing network model of operational SoS is proposed, and the definition and basic types of kill chains are introduced. Secondly, a network state transformation method based on Monte Carlo sampling is proposed to realize the transformation of the edge weight and edge existence. According to subgraph isomorphism matching theory, a kill chain search method is presented based on the improved Ullmann algorithm. Taking the comprehensive impact on the formation of kill chains as the entry point, the node importance index R is constructed. Finally, the proposed method is used to identify the key node of an air interception mission SoS network, and the results of the existing methods are compared. The comparision results verify the rationality and effectiveness of the proposed method.