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卫星接收机是卫星电视广播接收系统中的关键组成部分,根据接收信号的特点,有模拟卫星接收机(用于接收卫星上发送的模拟信号)和数字卫星接收机两种。数字卫星接收机的种类众多,其室内单元被称之为机顶盒,是卫星信号处理的主体部分,它处理来自室外抛物面天线上高频头的信号(第l中频信号),输出的AV信号再送到电视监视器中。市场上也有卫星接收和电视显示一体机。数字卫星机顶盒依据其接收形式
Satellite receivers are a key component of satellite TV broadcast reception systems. Depending on the characteristics of the received signals, there are two types of analog satellite receivers (for receiving analog signals transmitted on the satellite) and digital satellite receivers. Digital satellite receivers of many types, the indoor unit is called the set-top box, satellite signal processing is the main part of it from the outdoor parabolic antenna head tuner signal (l IF signal), the AV signal output to TV monitor. There are also satellite receivers and TV displays on the market. Digital satellite set-top boxes based on their reception form