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一、卫星电视直播 卫星电视直播,是指利用地球同步卫星的转发器向服务区发送电视广播信号,供地面用户进行个体接收或集体接收的业务。当前,正在运行中的卫星电视直播业务可分成两类:一是直接广播卫星系统,即DBS(Direct Broadcasting Satellite)系统;二是直接到户系统,即DTH(Direct To Home)系统。地面用直径大约为50厘米的碟形天线和卫星接收机便可收看卫星电视直播的电视节目。
First, the direct broadcast of satellite television live satellite TV, refers to the use of geostationary satellite transponders to send service areas to send television signals for the reception of ground or individual users receive the collective business. Currently, live satellite TV live broadcast services can be divided into two categories: one is a direct broadcast satellite system, namely DBS (Direct Broadcasting Satellite) system; the other is a direct to-home system, that is, a DTH (Direct To Home) system. Satellite dishes are available on the ground with dish antennas and satellite receivers about 50 cm in diameter.