Research on the simulation of on-orbit servicing spacecraft navigation system

On-orbit Servicing Spacecraft (OSS) has great military and civil value. This paper focused on the simulation issues of OSS navigation system. Firstly, the navigation misson of OSS were analyzed. The scheme of OSS navigation system and its working modes were designed. Then, the simulation frame of OSS navigation system was presented, its composition and supporting environment were analyzed. Digital simulation software of OSS navigation system based on MATLAB/RTW platform was developed. Some key techniques, such as data synchronization, navigation modes switching, thrust allocation algorithm etc., were analyzed in detail.