Research on Inter-satellite Ranging Technology Based on Proximity-1 Protocol

The key technologies of satellite constellations and formation flying missions are information interactions, relative ranging/time synchronization between satellites. In this paper, by using the time service given in CCSDS-Proximity-1 protocol, a non-coherent ranging and time synchronization method is proposed to complete the high-precision ranging between satellites while transmitting information between them. The formula derivation of the algorithm and analysis process of the model error are given in detail. The theoretical analysis and simulation results show that the proposed method achieves higher accuracy of ranging/time synchronization and functional integration. It can provide the powerful technical support for the Inter-satellite link.