Inter-Satellite Broadcast Topology Planning Method for Walker Constellation Using TDMA Link

In order to improve the data communication capacity and response speed of walker constellation such as global navigation constellation, scientific planning of the Inter-Satellite Link (ISL) topology is needed. Focusing on one kind of walker constellation using Time Division Multiple Access (TDMA) link as ISL, this paper proposes analyses on the geometric topology relation of Continuous Visible ISL (CVISL), based on which establishes K-cycle topology planning model, provides some optimal planning strategies for CVISL, and realizes multi-hops broadcast communication and effective operation of TDMA link. The model is proved by simulation that can improve the capacity of data broadcasting and automatic operation of the constellation.