摘要
数字微波使用专用无线频段,点对点定向传输方式传输电视信号,为地球站提供信源,相较光缆等有线传输方式,微波在安全性、保密性、抗自然灾害等方面具有一定优势.微波系统包括室内单元、室外单元、网管系统等几部分,将编码复用后的IP信号,经过调制、变频传输到卫星地球站.该文以云南台搬迁到新台址后建设的微波系统为例介绍数字微波系统的组建过程.
Abstract
Digital microwave uses a dedicated wireless frequency band,point-to-point directional transmission,to transmit TV signals,to provide information sources for earth stations,compared with cable transmission methods such as cable,microwave has certain advantages in security,confidentiality,resistance to natural disasters and so on.The microwave system includes indoor unit,outdoor unit,network management system and other parts,which transmits the IP signal after coding and multiplexing to the satellite earth station through modulation and frequency conversion.Taking the microwave system built after Yunnan Station moved to the new station as an example,this paper introduces the construction process of digital microwave.
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