Research on collision prediction &avoidance strategy of formation flying

In the satellite formation task, due to a satellite failure or formation task change, it is necessary to reconstruct the formation. In the process of reconfiguration of satellites, satellites anti-collision research is one of the most important links. In this paper, by collapsing the initial covariance matrix of the satellite, the collision probability density function is integrated in the region containing the satellite. The collision probability of formation satellites is obtained. When the collision probability is greater than the security threshold, two avoidance strategies (increase the long axis of the formation satellites and increase the track drift distance of the formation satellites) are proposed based on the Gaussian perturbation equation. The simulation experiments show that the method has great significance for the collision between satellites.