Domain Control Strategy for the Large-Scale Satellite Cluster

In large-scale satellite constellations, single node management and control will lead to poor system connectivity and high dependence on ground resources. A distributed domain control strategy for satellite constellations with hierarchical management, intradomain autonomy and dynamic maintenance was proposed. Firstly, both the static index and dynamic index to measure the governability were defined. According to the newly-defined indexes, a multi factor weighted cluster head selection method was proposed. Then, based on the selected cluster head node, a cascading optimal initialization algorithm of the cluster was established. Aiming at dynamic maintaining of the established cluster control structure, an event -triggered dynamic time slice domain control method was proposed. Finally, control simulation result of the proposed method in the case of LEO large-scale satellite constellation verifies the effectiveness of cluster head selection, cluster initialization and long-time maintaining. The number of satellites which were managed through ground station was reduced to 11 %. High dependence on ground resources was resolved.