信息高速公路和个人通信是当前通信领域研究、发展的热门主题,卫星移动通信是其必不可少的通信手段。本文综述了卫星移动通信的现状和发展,内容涉及通信频段、卫星分类、系统分类等;探讨了卫星移动通信所需关键技术,包括星座构成、调制方式、网络结构、手持终端等;最后提出了我国卫星移动通信发展的主要任务。 Information expressway and personal communication are the hot topics in the current research and development of communication field. Satellite mobile communication is an indispensable means of communication. In this paper, the current situation and development of satellite mobile communications are summarized, covering the communication frequency band, satellite classification, system classification and so on. The key technologies required for satellite mobile communication are discussed, including constellation structure, modulation scheme, network structure and hand-held terminal. Finally, China’s satellite mobile communications development of the main tasks.