Research on Node Importance Assessment in Maritime Kill Chain Based on Complex Network Centrality Theory

The maritime kill chain constitutes the core of the current joint maritime combat system, representing the practical application of the OODA loop in the context of informationized warfare. It embodies the operational mechanism of the joint combat system, where information flow dominates energy flow in a closed-loop operation. Determining the critical nodes of the maritime kill chain is the prerequisite for achieving comprehensive maritime dominance. Currently, the assessment of key nodes within maritime kill chains employs theoretical analysis and complex network methods. Complex network analysis techniques, which often utilize a node-by-node deletion approach to evaluate node importance, suffer from issues such as low search efficiency and limited applicability to small-scale systems. This paper takes the NIFC-CA system as an example to construct a typical maritime kill chain model. The importance of kill chain nodes is ranked using a complex network assessment method of integration centrality, and key nodes are identified. Additionally, graph theory and network analysis tools from Python’s Network library are utilized during the assessment to significantly enhance the computational efficiency.