地球站中频切换系统改造

Transformation of earth station intermediate frequency switching system

广播电视信号处理阶段,按照相关标准信号处理链路上的每台设备都需要有独立的设备系统,但是在实际问题的处理上两套系统需要做到快速准确的切换。传统的人工操作在反映时间和准确度上无法满足要求,因此需要引入中频信号的切换系统。文章以湖北地球站中频切换改造为例,介绍了构造中频切换的一种新思路。

In the stage of radio and television signal processing,each device on the signal processing link according to the relevant standard needs to have an independent hot standby system,but the two systems need to switch quickly and accurately in the processing of practical problems.Traditional manual operation can not meet the requirements of reflection time and accuracy,so it is necessary to introduce intermediate frequency signal switching system.Taking the transformation of intermediate frequency switching in Hubei Earth Station as an example,this paper introduces a new idea of constructing intermediate frequency switching.