Abstract:The information flow network is a directed weighted network that describes the process of information processing and transmission within and between platforms in an opera tional system from target detection to target strike. Studying the resilience of the information flow network is of significant importance for enhancing the effectiveness of the operational system. Therefore, the search, tracking, guidance and attack modules contained in the operational platform were first divided into multiple nodes. At the same time,considering both the nodes information processing capability and the information transmission capability between nodes, a directed weighted information flow network was constructed. An improved method for calculating node degree, interface number and network connectivity was proposed to evaluate the performance of the directed weighted information flow network. Then, based on traditional attack methods on nodes and edges, two attack methods targeting nodes and connected edges were introduced: deliberate soft-kill and random soft-kill. Finally,a comparative analysis of the impact of different attack methods on the information flow network was conducted, effectively simulating the resilience evaluation process of the directed weightedinformationflownetwork.