摘要
介绍在模拟中波发射机上开展数字音频广播(Digital Radio Mondiale,DRM)试验的具体情况。利用现有的模拟中波发射机以及天馈线系统简单改造后进行DRM广播试验,对DRM和幅度调制(Amplitude Modulation,AM)两种模式下发射机功率能耗和信号覆盖收听效果进行全面比对分析,取得了良好的效果,进一步验证中波DRM数字调幅广播的优势以及模拟发射机数字化的可行性,为同行DRM改造提供技术基础和支撑数据。
This paper introduces the specific situation of Digital Radio Mondiale(DRM)digital audio broadcasting test on analogue medium-wave transmitter.This test uses the existing analogue medium-wave transmitter and antenna feeder system after simple transformation to carry out DRM broadcasting test,and the DRM and Amplitude Modulation(AM)two modes of transmitter power energy consumption and signal coverage of the listening effect of the comprehensive comparative analysis,achieved good results,and to further validate the advantages of medium wave DRM digital AM broadcasting advantages and the feasibility of analogue transmitter digitization,and provide the technical basis and supporting data for peer DRM transformation.
作者
黄杰伟
HUANG Jiewei(Guangdong Huizhou Zhongbo Broadcasting Station,Huizhou 516007,China)
出处
《电视技术》
2023年第9期88-90,95,共4页
Video Engineering
关键词
数字广播
信号覆盖
正交频分复用(OFDM)
digital broadcasting
signal coverage
Orthogonal Frequency Division Multiplexing(OFDM)
