A Strategy of Rapid Orbit Recovery for the Geostaionary Satellite

Real time,continuous and high precision orbit is needed for the geostationary satellite orbit(GEO) maneuver.How to recover orbit rapidly for GEO based on short-arc tracking is the key factor.A new kinematic orbit determination approach is introduced in order to solve this problem,which is based on 9-parameter ephemeris parameter fitting.The mathematical model and partial derivative model are deduced in detail.And the coordinate rotation method is introduced to solve the singular problem in the ephemeris parameter fitting for the GEO satellite.In order to check the precision and availability of this method,the short-arc orbit determination tests are carried out using real COMPASS GEO C-band transfer ranging data.The results indicate that: ① with a 10 minutes tracking arc the position accuracy is better than 19 m,the velocity accuracy is 4 mm/s,which is better than the MEO satellite;② the 5-minute orbit prediction accuracy is 17.760 m,and the 10-minute orbit prediction accuracy is 18.168 m;③ several problems in the dynamics orbit determination and single point position determination are solved,the rapid orbit recovery for GEO is achieved,which satisfied the requirement of RDSS.