Research On Dynamics Of Satellite Network

With the development of space technology, modern small satellites are becoming more and more mature, and will have increasing effect. The concept of satellite network has provided new application directions and developable space for small satellites. This paper is to study the relevant issues of satellite network from the point of dynamics.Based on the two-body assumption, several coordinates and some elements of orbit are introduced to investigate the motion of satellites in satellites network. Then, emphasis is placed on dynamic model, including two-body dynamic model and relative motion dynamic model.As a lot of orbital maneuvers are involved in satellites network, this paper studies several method on orbital maneuver, in which Lambert method is highlighted in this paper. Then, a loopy Lambert Algorithm is introduced to solve the problem about single loop Lambert method. At Last, an adaptive Lambert Algorithm is issued to achieve high accuracy orbital maneuver.Satellite formation keeping and control is one key technique of formation flying, so impulse optimal control for relative motion is investigated deeply, including two-impulse and multiple-impulse optimal control. Then, Niche Genetic Algorithm is used to do global optimization for multiple-impulse rendezvous.Finally, error analysis under perturbation is introduced in detail, and some key techniques on error analysis are studied in this paper.