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从技术角度出发,VSAT系统主要构成成分为:SCPC和TDMA。在广电节目的传输中选取VSAT,其理由是VSAT的一大特点:投资成本低、远端站天线口径不大、系统网络站点繁多等,基于以上特点,结合DAMA技术、跳频技术、带宽动态管理技术的应用于卫星通信传输系统,这样的构造可以实现星状网IP传输数据、数字声实时数据、网状网电话功能的实现,是VSAT卫星通信今后发展的主要技术方式。
From a technical point of view, the main components of VSAT system: SCPC and TDMA. The reason for choosing VSAT in the transmission of radio and television programs is that VSAT has one major feature: low investment cost, small caliber of remote station antennas and many system network sites. Based on the above features, combined with DAMA technology, frequency hopping technology, bandwidth dynamics The application of management technology to the satellite communication transmission system can realize the transmission of star-shaped IP data, real-time data of digital sound and the function of mesh telephone. It is the main technical way for the future development of VSAT satellite communication.