Routing strategy research based on ISL states and topology snapshot in LEO satellite constellation

In LEO satellite constellation communication system, the routing strategy becomes a big challenge for the movement between satellites. According to researching on the 24/3/1 walker satellite constellation with inter-orbit ISLs and intra-orbit ISLs, two routing optimization scenarios based on ISL state and topology snapshot are suggested. At the same time, some valuable conclusions are provided according to computer simulation about the routing optimization scenarios and the MDA(Minimum Distance Algorithm).