Abstract: In order to ensure the navigation satellite inter-satellite link can run normally and get its service effect, the evaluation of the service quality of the inter-satellite link operation has become a major research focus in the field of inter-satellite links. This paper constructs an inter-satellite link operation service evaluation system based on the OSI reference model, and divides the underlying indicators according to different network levels. The inter-satellite link operation services of navigation satellites are evaluated from multiple perspectives and levels including physical layer, link layer, network layer, transmission layer and application layer. According to the fuzzy mathematics theory, the weight and membership degree of each evaluation factor are obtained, which can be used to calculate the fuzzy comprehensive evaluation value of inter-satellite link network. Based on the simulation data of navigation satellite inter-satellite link, the fuzzy evaluation score of simulation data of navigation satellite inter-satellite link operation service is calculated according to the established evaluation index system and the adopted fuzzy evaluation method. In this paper, the evaluation system and methods are studied in order to provide an idea for the operation service evaluation of navigation satellite inter-satellite link.

Key words: inter-satellite link, operation service, index system, analytic hierarchy process, fuzzy comprehensive evaluation