Relative navigation method of communication supporting spacecraft base-on particle filter

On-orbit servicing spacecraft has become a hot research field at domestic and abroad in recent years, communication supporting spacecraft as a class of on-orbit servicing spacecraft can provide date forwarding service to the communication fault spacecraft, which can prolong the on-orbit life. In order to improve the communication supporting spacecraft antenna pointing accuracy, relative navigation algorithm of communication supporting spacecraft based-on particle filter is proposed, then more precise relative position and speed between two spacecrafts are obtained. This method takes radio equipment as the main measurement parts for its inherent characteristics, such as long measuring distance, high covering rate and all-weather work, and combines the advantage relative position and speed estimation of particle filter in nonlinear system filtering. Simulation results show that the new algorithm can effectively reduce the errors and improving relative position and speed estimation precision, ensure the space missions of communication support effectively.