Abstract：First, this paper briefly gives the AOD processing model based on inter-satellite ranging observations. Then, based on the real inter-satellite ranging data of the 18 MEOs of the BDS-3 basic system, the paper performs an autonomous orbit determination processing and performance analysis. The analysis results demonstrate that BDS-3’s ISL ranging function operates stably and has good continuity, the available ISL number of a single satellite is about 8.5, and the PDOP is about 1.34, the centralized autonomous orbit determination processing for 30 consecutive days is normal and stable, the average RMS of the orbital URE of all 18 satellites is 0.47 m, and the average RMS of the constellation relative time synchronization error is 0.31 ns when compared with precision orbit and clock products.
LI Ziqiang,CHENG Junlong,LIU Wanke et al. Preliminary Performance Analysis of BDS-3 Centralized Autonomous Orbit Determination Based on Inter-Satellite Ranging Observations[J]. jgg, 2020, 40(12): 1283-1289.
