低轨卫星互联网通信系统链路预算分析与设计  

Link Budget Analysis and Design of LEO Satellite Internet Communication System

作　　者：周慧 郝兴斌 汤辉[1] 郑金秀[1] ZHOU Hui;HAO Xing-bin;TANG Hui;ZHENG Jin-Xiu(Southwest China Institute of Electronic Technology,Chengdu Sichuan 610036,China;Unit 32381 of PLA,Beijing 100070,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036 [2]解放军32381部队,北京100070

出　　处：《通信技术》2020年第10期2395-2403,共9页Communications Technology

摘　　要：低轨卫星互联网通信系统可为全球用户提供低延时、高带宽、全球无缝覆盖以及灵活便捷的互联网接入服务。低轨卫星互联网通信系统工作于Q/V频段,因此针对Q/V频段在空间传输的特点,分析了大气衰减、云雾衰减和降雨衰减对链路传输的影响,并结合工程实际,给出了详细的链路预算分析与设计过程,可为卫星链路的设计提供一定的参考。Low-orbit satellite Internet communication system can provide global users with low latency, highbandwidth, global seamless coverage and flexible and convenient Internet access services. The low-orbitsatellite Internet communication system works in the Q/V frequency band. According to the characteristicsof Q/V frequency band in space transmission, the effects of atmospheric attenuation, cloud attenuation andrain attenuation on link transmission are analyzed. And based on the engineering practice, the detailed linkbudget analysis and design process is given, which can provide a certain reference for the design of satellitelinks.

关 键 词：低轨卫星 Q/V频段 大气衰减 云雾衰减 降雨衰减 链路预算 

分 类 号：V556[航空宇航科学与技术—人机与环境工程]