低轨星座组网及地面IP路由技术适应性分析

doi:10.11959/j.issn.2096-8930.20200104

Abstract

Abstract:

With the development of the national major project of space-integrated-ground information network including space-based access network and LEO constellation system,it is urgently to be solved how to deal with the routing problem of LEO constellation with inter-satellite communication.One of the research ideas is to study the high dynamic characteristics of LEO constellations and analyze the adaptability of ground-based IP routing technology.The correlation analysis process and conclusion were given,which could provide important basis and support for the routing solution of LEO constellation system with inter-satellite communication.

Key words: LEO constellation system with inter-satellite communication, national major project of space-integrated-ground integrated information network, LEO system of satellite network, LEO constellation, routing technology

CLC Number:

TN927.2

Ci HE,Yasheng ZHANG,Chenhua SUN,Xudong LI. Analysis on Low-Earth-Orbit Constellation Networking and Adaptability of Ground IP Routing Technology[J]. Space-Integrated-Ground Information Networks, 2020, 1(1): 36-41.

Figures/Tables 15

References 10

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典型系统	Iridium	Orbcomm	OneWeb	Starlink	天地一体化	星网系统
卫星数量	66颗	约40颗	720颗	数万颗（初期4 000颗）	60～240颗	约800颗
工作频段	L为主	VHF	Ku,Ka	Ku,Ka	L,Ka	Ka
星间链路	有	无	无	计划有，目前无	有	计划有
星间路由交换	有	无	无	计划有，目前无	有	计划中，部分卫星有
星上交换容量	不小于100 MB	无	无	10 GB以上	10 GB以上	10 GB以上
卫星在轨情况	在轨	在轨	试验星在轨	试验星在轨，无星间链路	先导星在轨（有星间链路和路由交换）	试验星在轨（无星间链路）

对比项	60颗卫星	240颗卫星
变化次数/次	40	80
最长拓扑稳定时间/s	234	82
最短拓扑稳定时间/s	71	70

Analysis on Low-Earth-Orbit Constellation Networking and Adaptability of Ground IP Routing Technology

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