风云气象卫星与潜在国际移动通信系统用户终端在1695～1710MHz频段兼容性分析  

Compatibility Assessment between Fengyun Meteorological Satellite System and Potential IMT User Terminals in 1695-1710 MHz Band

作　　者：聂晶[1] 尹红刚[1] 喻阳 刘艳洁 赵延安 陈静 Nie Jing Yin Honggang Yu Yang Liu Yanjie Zhao Yanan Chen Jing(National Satellite Meteorological Center, Beijing 100081 State Radio Monitoring Center, Beijing 100037 China Satellite Communications Company Ltd. , Beijing 102205)

机构地区：[1]国家卫星气象中心,北京100081 [2]国家无线电监测中心,北京100037 [3]中国卫通集团有限公司,北京102205

出　　处：《气象科技》2017年第4期622-628,共7页Meteorological Science and Technology

基　　金：中国气象局关键技术"气象卫星系统与IMT系统在L频段兼容性分析"资助

摘　　要：目前我国风云气象卫星广泛使用的1695~1710 MHz频段被2015年世界无线电大会考虑作为国际移动通信(IMT)系统新增划分的候选频段。为了保护气象卫星的频谱资源并了解气象卫星和IMT系统用户端的同频共用干扰情况,本文阐述了风云气象卫星地球站和IMT系统用户终端在1695~1710 MHz频段的特性参数,建立了IMT用户终端的干扰模型,分别仿真分析了潜在的IMT用户端对太阳同步轨道和静止轨道风云气象卫星地面接收链路的干扰,结果表明:工作在1695~1710 MHz频段的IMT用户端对静止和极轨卫星地球站的保护隔离距离至少分别是46km和61km。由于我国布设了大量该频段的气象卫星数据国家级站和省级用户接收站,且移动终端随机移动的特点,这两种业务实际运行中无法兼容共用1695~1710 MHz频段。Currently,the frequency band 1695-1710 MHz is under consideration by some administrations as the potential candidate band for International Mobile Telecom（IMT）systems at the World Radio Communication Conference.According to the Radio Regulations（Edition of 2012）,the band 1695-1710 MHz is allocated to the meteorological satellite（MetSat） service（space-to-earth）on a primary basis.In order to protect the earth stations of the Fengyun（FY）MetSats in the 1695-1710 MHz band,the characteristics of the FY earth stations and the IMT user terminals（UEs）are introduced.The interference model from IMT UEs is build,and the interference into earth stations of geostationary（GSO）and nongeostationary FY satellites＇ earth stations are simulated respectively.The analysis results show that the separation distances of 46 km and 61 km are needed to prevent the aggregated interference from IMT UEs into GSO MetSat earth stations and non-GSO MetSat earth stations.Considering the fact that almost every large and medium-sized cities of China have one or more typical MetSat receiving systems in the 1695-1710 MHz band,based on above study results,it is concluded that MetSat service and IMT applications in this frequency band are incompatible.

关 键 词：气象卫星 国际移动通信系统 IMT用户终端 频谱兼容性 

分 类 号：P406[天文地球—大气科学及气象学]