| Abstract: | Considering the unique characteristics of space-based information network, such as periodic and dynamic changes of network topology, difficult on-demand replacement of satellite network equipment, and complex and diverse security threats of space environment, an improved elasticity evaluation method of space-based information network is proposed in order to effectively evaluate the resilience of space-based information network in case of network failure, environmental challenges or hostilities. Firstly, a three-dimensional resilience analysis model including time, probability and system capability is briefly described; Next, considering the impact of various adverse events, various capability adaptation methods and their specific measures on the resilience capacity of space-based information network, the resilience calculation methods of space-based information network when using single capability adaptation method and multi capability adaptation method are proposed respectively, and the resilience calculation methods of space-based information network under the determined scenario are further given. The example analysis shows that the proposed method can effectively evaluate the resilience capacity of space-based information network in a quantitative way, and provide a useful reference for the selection of various capacity adaptation methods and specific measures of space-based information network. |
