用户名: 密码: 验证码:
220GHz卫星通信链路的晴空大气衰减
详细信息    查看官网全文
摘要
卫星通信链路在穿越大气层的过程中要收到诸如降雨、云雾、大气折射等诸多因素的影响。晴空状况下,大气对卫星通信链路太赫兹波传播衰减主要产生于大气分子中氧分子和水汽分子的吸收作用。此外,卫星通信链路衰减还与地球工作站的天线仰角及通信频率相关。基于课题组前期对中国区域2012年度不同高度下大气参数进行逐月统计得到均值,进而得到的不同高度下太赫兹波氧气和水气对吸收衰减量值,本文以地球工作站为对象,分析计算其工作于220 GHz频段下不同仰角的太赫兹波大气衰减量值。
When satellite-earth communication link through the atmosphere, would be influenced by rain, fog, atmospheric refraction, and many other factors. At clear air condition, terahertz(THz) band satellite communication link wave propagation attenuation is mainly caused by oxygen molecular and water vapor molecules absorption in the atmosphere. Besides, satellite-earth communication link's atmospheric attenuation related to earth base's antenna elevation angle and working frequency band. Based on the early research of calculated China region 2012 different heights annually statistical THz band wave Oxygen and Water vapor absorption attenuation, this paper takes the earth station as the object, analyzed and calculated its 220 GHz satellite-earth communication link's THz wave atmospheric attenuation value under different elevation angle.
引文
1 P H Siegel.Terahertz technology[J].IEEE Trans.on Microwave Theory Tech.,2002,50:910-928
    2 刘丰,朱忠博,崔万照等.太赫兹技术在空间领域应用的探讨[J].太赫兹科学与电子信息学报,2013,11(6):857-866
    3 Radio communications Bureau,International Telecommunications Union.Attenuation by atmospheric gases.Recommendation ITU-R P.676-9,Feb.2012
    4 卫星通信链路大气和降雨衰减计算方法.中华人民共和国通信行业标准.YD/T 984-1998
    5 Xiaofan Yang,Yahua Wang,Yonghu Zeng and Liandong Wang.China Annually Statistical THz Wave Atmospheric Slant Route Propagation Attenuation Calculation.9th UK-Europe-China Workshop on Millimeter Waves and Terahertz Technologies,Sep.5-7,Qingdao,2016

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700