Research for ground-based astrodynamical experiment for spacecraft relative motion

This paper proposes a method to build the spacecraft relative motion's ground-based astrodynamical experiment and figures out an approach to prove the reliability of ground-based experimental results. First, the spacecraft relative motion's ground-based astrodynamical experiment is carried out with the help of similarity theory, then the compensation method for making up the dynamical difference between space environment and experimental environment, after that the dynamical model of experimental disturbances is given for further counteract. Second, an experimental control method similar to space control system is designed for controlling the relative motion and compensating the inertia forces, and both the numerical simulation and experimental results show the effectiveness of control system. Finally, a similarity function used for measuring the similarity degree of experimental result will be helpful in proving the reliability of spacecraft relative motion's ground-based astrodynamical experiment. According to the results of simulation, the experimental scheme is available and reliable. This method is helpful for the development of ground-based astrodynamical experiment.