卫星宽带系统是信息化技术发展的产物,是解决传输带宽限制的一种手段。目前卫星宽带系统正处于研制开发阶段,其中,较具代表性的Teledesic和Skybridge系统间存在着根本区别;前者不依赖地面网,自成体系;后者则需依赖地面网发展业务。卫星宽带系统的投入使用还需较长的一段时间。 Satellite broadband system is a product of the development of information technology is to solve the transmission bandwidth limit a means. At present, the satellite broadband system is in the research and development stage. Among them, there is a fundamental difference between the representative Teledesic and Skybridge systems. The former does not rely on the terrestrial network and the self-contained system, while the latter depends on the terrestrial network to develop its business. Satellite broadband system put into use still take a long period of time.