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我国首套以话音为主的VSAT卫星通信试验系统近日研制成功并通过卫星电路环测。这项国家科委下达的重点科技项目是由邮电部第一研究所、清华大学、南京通信科学院、总参57研究所通力协作完成的。这套具有按需分配（DAMA）功能的试验系统技术上接近现代VSAT水平,其中射频单元和回声抵消器部件已具有一定的实用性。它的研制成功,填补了国内这方面的空白。VSAT系统具有技术先进、安装方便、适应性强、成本低廉等特点,我国目前已建的近300个VSAT卫星站,均系引进设备。
China’s first set of voice-based VSAT satellite communication test system has been successfully developed and measured by the satellite circuit. The key science and technology project issued by the State Science and Technology Commission was completed through the concerted efforts of the First Institute of Posts and Telecommunications, Tsinghua University, Nanjing Institute of Communications, and the General Staff Research Institute 57. This DAMA-enabled test system is technically close to modern VSAT levels, with RF unit and echo canceller components of some practicality. Its successful development has filled the gap in this area in China. VSAT system has the characteristics of advanced technology, convenient installation, strong adaptability and low cost. Nearly 300 VSAT satellite stations built in our country at present are all imported equipment.