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现代通信卫星概述士元卫星通信是现代通信的重要手段，当今它正提供８０％的国际通信和１００％的国际电视转播，并开通部分国内或区域的通信和电视广播业务。目前的卫星通信主要包括卫星固定通信、卫星移动通信和卫星电视直播以及卫星数据中继几大领域。固定通信卫星固定...
Summary of Modern Communications Satellites Shi Yuan satellite communications is an important means of modern communications. It is now providing 80% international communications and 100% international television broadcasting and opening up some domestic or regional communications and television broadcasting services. The current satellite communications mainly include fixed satellite communications, satellite mobile communications and satellite television broadcast and satellite data relay several major areas. Fixed communication satellite fixed ...