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利用卫星传输远距离的电视节目,是六十年代以来通信事业上的重大突破。其传输方式可分为转播方式和直播方式两种。转播方式通常是广播与通信业务共用频段。如加拿大ANIK卫星,美国的PBS广播卫星,印度尼西亚、巴西和中国的国内卫星都是采用通信频段(4/6GHz),地面接收电视的天线口径3～6米。除C频段外,国际上已采用Ku频段中功率通信卫星转播电视节目,地面可采用2米
The use of satellites to transmit long-range television programs has been a major breakthrough in communications since the 1960s. The transmission method can be divided into two kinds of broadcast and live broadcast. Broadcasting is usually broadcast and communications services shared band. Such as Canada ANIK satellite, the PBS broadcasting satellite in the United States, Indonesia, Brazil and China’s domestic satellites are using the communications band (4 / 6GHz), terrestrial receiving TV antenna diameter of 3 to 6 meters. In addition to the C band, the international band has used Ku band power communications satellite television programs, the ground can be 2 meters