However, satellitetransmission scheme provides mobile network coverage at a relatively lower price, effectively making up the digital gap between the urban and rural regions.
而卫星传输方案则以较低的价格提供了移动网络覆盖，有效地弥补了城乡间的数字鸿沟。
2
Compared with cable digital TV and satellitedigital TV, channel to the environment of terrestrial digital TV transmission system is more complex.
与有线数字电视和卫星数字电视相比，地面数字电视传输系统中的信道环境要复杂的多。
3
Digital microwave has become one of the three big supports (microwave, fiber and satellite) of modern information transmission.