Q/V频段高通量卫星通信系统抗雨衰设计  

Rain Fade Mitigation Design for Q/V Band HTS System

作　　者：李若可 李新华 李集林[1] 张云杰 Li Ruoke;Li Xinhua;Li Jilin;Zhang Yunjie(Space Star Technology Co.,Ltd.,China Academy of Space Technology,Beijing,100086)

机构地区：[1]中国空间技术研究院航天恒星科技有限公司

出　　处：《数字通信世界》2020年第2期10-13,15,共5页Digital Communication World

摘　　要：分析了高通量通信卫星系统的发展趋势,下一代高通量卫星的容量将达到1Tb/s,而其面临的挑战是现有的Ka频段频谱资源有限,因此需要将馈电链路从Ka频段迁移到频谱资源更多的Q/V频段。针对Q/V频段卫星通信系统可能遇到的问题--雨衰问题,详细分析现有的三种空间分集模式,从卫星载荷实现复杂程度、地面段投资成本分析每种模式优缺点。针对最为可行的N+P模式,展开其馈电链路可用度计算,并给出实现的关键技术--信关站切换策略。The development trend of HTS has been analyzed.The key challenge to achieve the next generation Terabit/s broadband satellite communications (SatCom) is the limited available spectrum in the currently used Ka-band.An attractive solution for resolving the issue is migrating the feeder link from the Ka-band to the Q/V band where larger bandwidths,up to 5 GHz,are available.Aiming at the problem of rain attenuation that Q/V band satellite communication system may encounter,we analyzed three existing spatial diversity modes in detail.The advantages and disadvantages of these modes are analyzed from the payload complexity and ground segment investment expenditure.For the attractive N+P mode,the feeder link avRain Fade Mitigation Design for Q/V Band HTS systemailability calculation is carried out,and the key technology of implementation--the gateway switching strategy is given.

关 键 词：Q/V频段 高通量卫星 抗雨衰 链路可用度 空间分集技术 

分 类 号：TN927[电子电信—通信与信息系统]