一种面向分布式星群的混合拓扑  

A hybrid topology for distributed satellite clusters

作　　者：刘凯 章宇兵 陆洲 周彬 LIU Kai;ZHANG Yubing;LU Zhou;ZHOU Bin(Institute of Space Information Systems,China Academy of Electronics and Information Technology,Beijing 100041,China)

机构地区：[1]中国电子科学研究院天基信息系统研究所

出　　处：《太赫兹科学与电子信息学报》2019年第6期1086-1090,共5页Journal of Terahertz Science and Electronic Information Technology

基　　金：中国博士后科学基金面上资助项目(2017M620061);中国电子科学研究院创新基金项目

摘　　要：针对分布式星群内无线网络的高可靠、灵活交换和低实现复杂度的需求,提出一种面向分布式星群的混合拓扑结构。通过在星群内各颗卫星配置模拟交换载荷实现模拟域的无中心拓扑,在交换卫星配置数字交换载荷实现数字域的双中心拓扑。理论及数值分析表明,混合拓扑结构具备与无中心拓扑结构相同的拓扑可靠性及较低的实现复杂度,同时能够提供波束/波长级、子带级和分组交换颗粒度。A hybrid topology is proposed in order to satisfy high reliability and flexibility,low implementation complexity of wireless network in a satellite cluster.In a satellite cluster employing the proposed topology,a meshed topology in analog domain is realized by deploying analog switching payload in each satellite;a two-center topology in digital domain is achieved by deploying digital switching payload in the two switching satellites.Theoretical and numerical analysis demonstrates that,the topology reliability of hybrid topology is the same as that of meshed topology,while the implementation complexity is lower than that of meshed topology.Furthermore,the switching granularities of beam/wavelength,subband and packet are achieved in a satellite cluster with the hybrid topology.

关 键 词：分布式星群 群内无线网络 混合拓扑 星上交换 可靠性 

分 类 号：TN914.42[电子电信—通信与信息系统]