卫星互联网星间激光通信链路传输与路由交换技术研究(特邀)  

Research on Inter-Satellite Laser Communication Link Transmission and Routing Switching Technology of Satellite Internet(Invited)

作　　者：常呈武 刘宏阳 Chang Chengwu;Liu Hongyang(Beijing Space Information Transmission Center,Beijing 102300,China)

机构地区：[1]北京空间信息传输中心,北京102300

出　　处：《激光与光电子学进展》2024年第7期62-67,共6页Laser & Optoelectronics Progress

基　　金：航天系统部“十四五”装备综合研究项目。

摘　　要：随着低轨卫星互联网的迅猛发展,星间激光通信链路成为低轨大型星座互联互通的关键,也是用户接入卫星互联网实现全球范围内端到端交互的基础。与地球同步轨道的星间环网不同,由于低轨卫星的高动态性,造成星间链路需要不断动态重构,由此带来空间节点的编址方式、交换路由方法等诸多技术难题,是目前该领域关注的热点。此外,用户终端通过微波链路接入卫星互联网,需要微波链路与激光链路之间的汇集和分发,也是迫切需要研究解决的重点难点问题。With the rapid development of LEO satellite internet,inter-satellite laser communication link,which is the key to connect each other for the LEO large constellations,and is the base for users to access satellite internet and achieve the end-to-end communication around the world.It is different between the ring network of the GEO satellites and the LEO satellite internet,due to the high dynamics of the LEO satellite motion,the inter-satellite laser links need to reestablish continually,so it brings a lot of technology problems in the addressing mode and switching routing method along the space nodes,and is the hotspot in this field.In addition,user terminals access the satellite internet by microwave link,which needs aggregation and distribution between microwave link and laser link.It is also a key and difficult problem that needs to be urgently studied and solved.

关 键 词：卫星互联网 低轨星座 星间激光通信链路 传输 交换 

分 类 号：TN929.13[电子电信—通信与信息系统]