DRM短波数字广播技术及监测

DRM Shortwave Broadcasting Technology and Monitoring

在HF频段开展的短波声音广播业务,是各国对文化、政策进行区域或全球宣传的有利工具。自短波广播出现以来,HF频谱资源日趋紧张。随着科技的进步,听众对高品质声音广播的需求增大。国际电信联盟顺应时代和科技的发展,研发并制定了世界数字广播系统,由此,短波广播迈入数字化的进程不断加快。本文就短波数字广播的调制技术及监测进行分析和介绍。

Shortwave sound broadcasting in the High Frequency Band is a effective publicity way for the national culture and policy in district and worldwide. From the broadcasting existing,frequency spectrum is more and more lacking. With development of technology, demand for high quality sound broadcasting of the audience have been increasing. For adapting development of time and technology, International Telecommunication Union( ITU) formulates Digital Radio Mondiale( DRM) Broadcasting System,so that the speed of the analog AM broadcasting generated to the digital AM broadcasting is more and more quickly. In this paper,modulation technology and monitoring of DRM is introduced.