Satellite communication, due to its features of wide area application and flexible networking, has attracted extensive attention and has been used widely since its emergence. In the new century, satellite communication is being updated in technology. By introducing the history of satellite communication and analyzing the characteristics of several current satellite communication systems, the paper presents some hot technologies and applications of satellite communication systems as well as their development trends and developing strategy in the future.%卫星通信由于具有广域性、组网灵活等优良特点,自诞生之日起就得到了广泛关注和应用,进入新世纪后卫星通信正在进行着技术上的换代升级。通过简单回顾卫星通信技术发展的历程,以及对当今几个典型系统技术特点的分析,提出新时期卫星通信系统的技术和应用热点,未来的发展趋势以及应该采用的发展策略。
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