Lun Weicheng, Li Qun, Zhang Can, Zhu Zhi
College of Systems Engineering, National University of Defense Technology, Changsha 410073, China.
Entropy (Basel). 2023 Jan 6;25(1):121. doi: 10.3390/e25010121.
An inter-satellite communication network of satellite swarm (ICNS) is created if the members of a satellite swarm communicate with each other via inter-satellite links (ISLs). ICNS can be constructed using the theory of complex networks. A link community is defined as two satellites between which the ISL has been established. The satellite swarm, whose members have not established ISLs, is modeled as a pre-link network (PLN). The edge of a PLN is described as a candidate for the link community. Consequently, an ICNS can be constructed by collecting combinations of candidates for link communities (CCLC) based on PLN and then by selecting one of these. An algorithm is designed to take a sample of all CCLCs. A new structural entropy of networks is developed to evaluate a CCLC. The CCLC with a maximum structural entropy in the CCLC sample will be selected to become the edge set of the ICNS. An improvement method was proposed to ensure that the ICNS remains a dynamic connected network by preventing each satellite from establishing an ISL with the same satellite. The simulations demonstrated that the proposed method outperformed the benchmark methods, and it is necessary to adopt the improvement method.
如果卫星群的成员通过星际链路(ISL)相互通信,就会创建一个卫星群的星际通信网络(ICNS)。ICNS可以利用复杂网络理论构建。链路社区定义为已建立ISL的两颗卫星。其成员尚未建立ISL的卫星群被建模为预链路网络(PLN)。PLN的边被描述为链路社区的候选边。因此,可以通过基于PLN收集链路社区候选组合(CCLC),然后从中选择一个来构建ICNS。设计了一种算法来对所有CCLC进行采样。开发了一种新的网络结构熵来评估CCLC。将从CCLC样本中选择具有最大结构熵的CCLC作为ICNS的边集。提出了一种改进方法,通过防止每颗卫星与同一颗卫星建立ISL来确保ICNS保持动态连通网络。仿真结果表明,所提方法优于基准方法,采用改进方法是必要的。