摘要
介绍了VSAT天线系统的组成、分类以及我国应急通信涉及的常用同步卫星的在轨情况。重点介绍VSAT天线的信标、DVB电视节目和信号载波三种对星方式,通过比较和分析,归纳出各自的优、缺点。针对应急卫星通信天线,建议使用不同的对星方式。
The composition and the classification of very small aperture terminal（VSAT） antenna system, and the synchronous satellites currently used for emergency communication in China are presented. It focuses on the three ways for satellite signal alignment of VSAT antennas： beacon signal, DVB TV program carrier and signal carrier. The three ways are compared, the advan- tages and disadvantages of each way are identified. Finally, it is concluded that aimed at VSAT antennas in the emergency communication, this paper suggests to use different ways of satellite signal alignment.
出处
《指挥信息系统与技术》
2011年第2期39-42,75,共5页
Command Information System and Technology
关键词
VSAT卫星通信
VSAT天线
对星方式
VSAT satellite communication
VSAT antennas
ways of satellite signal alignment
