A new dynamic orbit determination method for GEO satellite after orbit maneuver

摘要

Real time, continuous and high precision navigation service is needed due to the continual geostationary satellite(GEO)orbit maneuver. How to recover orbit rapidly for GEO in Beidou system(BDS)based on short-arc tracking is the key factor. A new orbit determination method uniting data before, among and after maneuver is researched,C-band transfer ranging data and telemetry and telecontrol parameters during satellite maneuver are used together. The results based on observation data for GEO in BDS indicate that: the integrated solution strategy of orbit parameters and thrust force parameters needs to be adopted in the period of orbit recovery. The 2-hour orbital prediction accuracy of 3-dimensional positions is 30m-level, orbital precision in radial component is better than 3m 2 hours after orbit maneuver. It's a solution to resolve several problems of dynamic orbit determination and point positioning in short-arc tracking.