摘要
针对国际移动卫星通信公司最新一代的卫星移动通信系统——海事五代卫星通信系统在Ka频段雨衰严重的问题,分析了关口站冗余配置技术;对系统中为了提高通信容量和提高可靠性所采用的点波束及频率复用、混合组网、切换和可变编码调制等关键技术,进行了详细剖析。分析了海事五代卫星通信系统的应用前景,并对第六代海事卫星通信系统的发展进行了展望。总结海事五代卫星的技术体制,提出了发展我国卫星移动通信系统的建议。
The Inmarsat-5 system is the latest generation of satellite mobile communication system in the world.The network architecture,system composition,air interface and operation flow for Inmarsat-5 system are studied in detail.In order to reduce the rain attenuation in Ka-band,two satellite access stations are deployed in one satellite footprint.The key technologies which improve the communication capacity and reliability,such as spot beam configuration,hybrid networking,switching and variable coding and modulation,are discussed in detail.The application prospects of Inmarsat-5 in China and the future development of Inmarsat-6 are introduced in brief.The technical system of Inmarsat-5 is summarized,and the recommendations are put forward for the development of mobile satellite communication system in China.
作者
张华冲
韩星
谢华军
杨松
ZHANG Huachong;HAN Xing;XIE Huajun;YANG Song(The 54th Research Institute of CETC,Shijiazhuang 050081,China;Unit 32053,PLA,Guangzhou 510010,China)
出处
《无线电工程》
2019年第11期1009-1013,共5页
Radio Engineering
基金
河北省重大科技成果转化专项基金资助项目(14040322Z)
关键词
卫星移动通信
海事五代卫星
网络架构
关口站
mobile satellite communications
Inmarsat-5 Satellite
network architecture
satellite access station
