摘要
1695~1710 MHz频段是我国静止轨道和太阳同步轨道风云气象卫星广泛使用的空对地方向数据传输频段。2015年世界无线电大会(WRC-15)把这一频段作为国际移动通信系统(IMT)在全球范围内寻求新频谱划分的候选频段。为了保护气象卫星的频谱资源不受到潜在的IMT系统干扰,并探知风云气象卫星和IMT系统基站的同频共用情况,本文结合IMT基站和风云气象卫星数据接收站的链路参数,建立干扰模型,分别仿真分析了IMT基站对FY-3号气象卫星和FY-4号气象卫星数据接收的干扰情况。在我国城市和郊区布设了大量的国际级和省级气象卫星用户接收站的情况下,研究结果表明IMT基站和风云气象卫星接收站间距离很难满足隔离距离的要求,因此不建议IMT基站和气象卫星共用1695~1710 MHz频段。
Currently,the frequency band 1695-1710 MHz is under consideration by some administrations as the potential candidate band for IMT systems under Agenda Item 1.1 of WRC-15.According to the ITU-R Radio Regulations（Edition of 2012）,the band 1695-1710 MHz is allocated to the meteorological satellite service（space-to-earth）on a primary basis,Chinese FY geostationary（GSO）and nonegeostationary（NGSO）satellites also use this band for data transmission.In order to ensure that no unacceptable interference is caused by IMT base stations into FY satellites in the band 1695-1710 MHz,this study provides an analysis of the frequency compatibility from IMT base stations to GSO and NGSO meteorological-satellite systems,respectively.Based on the interference simulation analysis results,it appears that sharing between meteorological satellite service and IMT base stations in this frequency band is not compatible.
出处
《气象科技》
北大核心
2017年第6期968-973,994,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"(CMAGJ2015M75)资助
