近年来由于科技的不断发展,小卫星通信愈来愈受到各国的重视和发展。众所周知的Iridium、Globalstar等LEO卫星移动通信系统的出台,标志着小卫星的发展进入了一个新的阶段。本文从小卫星的概念和发展过程以及其分类的不同角度,讨论了小卫星的通信子系统中所要用到的关键技术,并展望了小卫星的未来发展。 In recent years, due to the continuous development of science and technology, the small satellite communications have drawn increasing attention and development from all countries. The well-known LEO satellite mobile communication system such as Iridium and Globalstar marks a new stage in the development of small satellites. This paper discusses the key technologies to be used in the communication subsystem of small satellites from the concept and development process of small satellites and their different classification, and looks forward to the future development of small satellites.