A Summary of Orbit Determination Techndogy for Chinese Lunar Exploration Project

The orbit determination of lunar probes is the basis of lunar exploration. With the development of deep space TT&C (Tracking, Telemetry and Command systems) in China, the technology of orbit determination has made rapid progress driven by the lunar exploration mission. The space-time reference and dynamic mode are presented for the development of orbit determination. Based on this, the orbit determination performance and precision of lunar probes are continuously improved in China, which is a good reference for lunar exploration mission for now and future.