地面数字电视广播单频网运维研究  

Research on DTMB Single Frequency Network Operation and Maintenance

作　　者：董云龙 DONG Yunlong(Liaoning province Radio and Television Jinzhou Medium Wave Station,Huludao 225000,China)

机构地区：[1]辽宁省广播电视锦州中波站,辽宁葫芦岛225000

出　　处：《电视技术》2024年第9期126-129,共4页Video Engineering

摘　　要：介绍国标地面数字电视广播(Digital Terrestrial Multimedia Broadcasting,DTMB)单频网系统的基本原理和关键参数,详细分析工作中遇到的DTMB单频网系统维护问题,总结DTMB单频网系统在播出参数的核对、信号源的选择、自备信号源的配置、监测天线的选择以及地方自建单频网的参数选择等方面遇到的问题,并给出解决方案和建议,供广播电视同行作为运维的参考案例,以保证国家级、省级以及地市级单频组网的绝对同步,最终实现地面数字电视广播的高质量播出。This article introduces the basic principles and key parameters of the national standard Digital Terrestrial Multimedia Broadcasting(DTMB)single frequency network system,analyzes in detail the maintenance problems of the DTMB single frequency network system encountered at work,and summarizing the problems encountered in DTMB single frequency network system,and gave solutions and personal suggestions for colleagues to use as a reference case for operation and maintenance in order to ensure absolute synchronization of DTMB,ultimately achieving high-quality broadcasting of DTMB broadcasts.

关 键 词：数字电视 地面数字电视广播(DTMB) 单频网 广播 

分 类 号：TN934.8[电子电信—信号与信息处理]