A Real-time Trajectory Re-planning Method for Orbital Transfer Vehicle via Convex Optimization

A real-time trajectory re-planning method based on mission partition is proposed to deal with abnormal states of Orbital Transfer Vehicle (OTV). A trajectory re-planning problem is described as nonlinear optimal control problem. A mission partition method is designed to complete decision for target orbit considering deviations of orbit inclination and apogee altitude. According to different mission areas, the corresponding performance index and constraints are determined. Take the mission of circular target orbit as an example, a convex optimization problem is constructed and solved via sequence convex programming. The simulation results show that when a flight deviation occurs, this method can complete re-planning mission rapidly and achieve a certain degree of recovery for abnormal flight states.