卫星通信是当今乃至下世纪的重点科技开发项目，是实现全球移动通信和个人通信，完成无缝覆盖的主要手段，它和卫星数字电视直播及卫星数字音频广播是在全球蓬勃发展的三项重要业务。对卫星应用颇有研究的廖春发为本刊撰写了“全球卫星数字电视直播市场发展态势”一文，论述了? Satellite communication is the key scientific and technological development project of today and even the next century. It is the primary means of achieving seamless coverage of global mobile communications and personal communications. It is closely related to satellite digital television broadcasting and satellite digital audio broadcasting which are three important business. Liao Chunfa, who has studied quite a lot about satellite applications, wrote a paper titled “The Development Trend of Global Satellite Digital TV Broadcasting Market”.