As the constellation scale expands,the traditional constellation management mode imposes a substantial burden on ground stations.In order to construct a high-efficiency management mode for the low earth orbit(LEO)mega...As the constellation scale expands,the traditional constellation management mode imposes a substantial burden on ground stations.In order to construct a high-efficiency management mode for the low earth orbit(LEO)mega-constellation and to respond to the mission rapidly,a management strategy using distributed management domains as well as their dynamic evolution and maintenance methodology is proposed.In this paper,the distributed management domain is described as a variable topology consisting of groups of categorized satellites.The mega-constellation management topology is divided into a limited number of sub-topologies,determined by minimizing the average transmission latency and the frequency of management updates.Considering the dynamic of constellation,a method for predicting satellite management switching time is proposed,and a fast management maintenance strategy is designed to reassign satellites into new sub-topologies,ensuring a low overall update frequency of the management domain structure.Simulation validates that the management strategy divides the mega-constellation into dozens of management sub-topologies with similar structure and low-frequency management updates.Throughout the management period,each satellite remains under management with low transmission latency,and the overall management topology maintains long-term stability.展开更多
基金funded by State Key Laboratory of Micro-Spacecraft Rapid Design and Intelligent Cluster(MS02240109)Guangdong Basic and Applied Basic Research Foundation(2023B1515120018)Shenzhen Science and Technology Program(JCYJ20220818102207015)。
文摘As the constellation scale expands,the traditional constellation management mode imposes a substantial burden on ground stations.In order to construct a high-efficiency management mode for the low earth orbit(LEO)mega-constellation and to respond to the mission rapidly,a management strategy using distributed management domains as well as their dynamic evolution and maintenance methodology is proposed.In this paper,the distributed management domain is described as a variable topology consisting of groups of categorized satellites.The mega-constellation management topology is divided into a limited number of sub-topologies,determined by minimizing the average transmission latency and the frequency of management updates.Considering the dynamic of constellation,a method for predicting satellite management switching time is proposed,and a fast management maintenance strategy is designed to reassign satellites into new sub-topologies,ensuring a low overall update frequency of the management domain structure.Simulation validates that the management strategy divides the mega-constellation into dozens of management sub-topologies with similar structure and low-frequency management updates.Throughout the management period,each satellite remains under management with low transmission latency,and the overall management topology maintains long-term stability.
