影响DAM中波发射机信噪比的因素分析及对策研究  

The Analysis of Factors Affecting the SNR of DAM Medium Wave Broadcasting Transmitter and Research on Countermeasures

作　　者：李桂明 LI Guiming(Guangxi Radio and Television Earth Station,Nanning 530012,China)

机构地区：[1]广西广播电视地球站,广西南宁530012

出　　处：《电声技术》2024年第3期101-104,共4页Audio Engineering

摘　　要：主要研究了影响数字调幅(Digital Amplitude Modulation,DAM)中波发射机信噪比的主要因素和相应的对策。首先介绍了数字调幅广播的工作原理和DAM中波发射机信噪比(Signal-to-Noise Ratio,SNR)的基本概念,其次重点分析了影响DAM中波发射机信噪比的主要因素,最后针对性地提出了抑制其影响的措施,以期为改进DAM中波发射机性能提供参考。This paper mainly studies the main factors affecting the signal-to-noise ratio of Digital Amplitude Modulation(DAM)medium wave transmitter and the corresponding countermeasures.Firstly,the working principle of digital AM broadcasting and the basic concept of Signal-to-Noise Ratio(SNR)of medium-wave transmitter in DAM are introduced.Secondly,the main factors affecting the SNR of medium-wave transmitter in DAM are analyzed emphatically.Finally,the measures to restrain its influence are put forward,which provides reference for improving the performance of medium-wave transmitter in DAM.

关 键 词：数字调幅 中波发射机 信噪比(SNR) 影响因素 改进策略 

分 类 号：TN948.1[电子电信—信号与信息处理]