Rendezvous orbital dynamics and control(RODC) is a key technology for operating space rendezvous and docking missions. This paper surveys the studies on RODC. Firstly,the basic relative dynamics equation set is introduced and its improved versions are evaluated. Secondly,studies on rendezvous trajectory optimization are commented from three aspects: the linear rendezvous,the nonlinear two-body rendezvous,and the perturbed and constrained rendezvous. Thirdly,studies on relative navigation are briefly reviewed,and then close-range control methods including automated control,manual control,and telecontrol are analyzed. Fourthly,advances in rendezvous trajectory safety and robust analysis are surveyed,and their applications in trajectory optimization are discussed. Finally,conclusions are drawn and prospects of studies on RODC are presented.
In view of the probability dilution problem of the existing quantitative indexes of rendezvous trajectory safety performance using collision probability,this paper proposes a new quantitative index of rendezvous trajectory safety performance by well combining collision probability with warning threshold.The proposed new index increases monotonously as the position errors of the chaser spacecraft increase,therefore it can effectively overcome the problems of the reduction in the largest performance value and the advancement in the most dangerous time induced by the probability dilution.The proposed new index is applied to the safety design of close range rendezvous missions.The mission’s safety requirements for initial navigation precision and the safe region of initial and final keeping points’positions with a certain navigation precision are analyzed,and several valuable conclusions about the relation between position navigation precision and velocity navigation precision as well as the relation between keeping points’positions and navigation precision are obtained.
