低轨卫星移动通信系统的星间链设计  

Design of the Inter-satellite Link of Low Earth Orbit Mobile Satellite Communication Systems

作　　者：胡东伟[1,2] 宋春晓[1,2] 

机构地区：[1]通信网信息传输与分发技术重点实验室,河北石家庄050081 [2]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电通信技术》2017年第5期11-15,共5页Radio Communications Technology

基　　金：国家部委基金资助项目

摘　　要：从分析铱星通信系统的特点出发,研究了低轨卫星移动通信系统波束覆盖面积和星间切换、波束切换的频率,以及系统用户位置管理方案和数据包路由策略对星间链的要求;分析了星间链的多普勒特性,提出星间链应采用频分双工体制、采用Ka(或更高)频段的载波频率,并设计了星间链传输的帧结构方案。仿真验证了该帧结构方案的可行性。Beginning with analyzing the characteristics of Iridium Mobile Satellite Communication System, this paper studies theInter-Satellite-Link （ISL） scheme of Low Earth Orbit Mobile Satellite Communication Systems. The coverage of the antenna beam,andthe frequency of inter-satellite and inter-beam handovers are firstly studied. Then the requirements of on board routing algorithms on ISLare clarified,and the Doppler characteristics of ISL are analyzed. Based on the above,the duplex scheme and the frame structure of ISLare proposed. Simulations are made to verify the feasibility of the frame structure.

关 键 词：低轨卫星 移动通信 星上路由 星间链 

分 类 号：TN919[电子电信—通信与信息系统]