Configuration Matching Design of Multilayer Constellation System

Multi-layer constellation system can extend various functionality and services by combining sub-layers with different altitudes and inclinations. However, maintaining consistent coverage and inter-layer satellite links is challenging due to their different dynamic characteristics. To ensure the periodicity of the inter-layer spatial configuration and connection topology, an orbit and configuration parameters matching design method is proposed to match the inter-layer dynamic characteristics of the system. Firstly, based on the desired ratios of orbit period and regression rate, the orbit altitude and inclination for each constellation layer can be calculated. Then, by mapping the satellite coverage area to the phase plane, a judgement approach is proposed to unify the coverage performance analysis of multi-layer regular constellations, and then the corresponding matching relationship among their configuration parameters is proposed. Subsequently, based on the above matching principle, the selection method and detailed design steps for multi-layer constellation orbit elements and configuration parameters are provided. Finally, a simulation case for a three-layer configuration matching constellation is presented. By integrating a discontinuous coverage constellation with a single-fold