论中波广播在应急广播系统中的重要性及其技术实现

Discussion on MW Broadcast's Importance and Technology Realization in Emergency Broadcasting System

我国正处于应急广播系统建设的初始阶段,相关的技术、规范也逐步推出,中波广播具备覆盖面广、覆盖死角少,覆盖信号强等优势,但在各地应急广播建设方案中被忽视,论文本着研究探讨的目的对通过双音多频技术、数字水印技术、中波数字广播技术等三种实现应急广播播出的技术形式进行比较,将现有中波广播运用到应急广播系统中,从而进一步完善我国公共突发事业广播应急系统。

Our country is in the initial stage of the construction of the emergency broadcast system, and related technology and standard also are gradually introduced. Medium-wave radio has advantages such as broad coverage, less dead angle and strong signal, but it is ignored in the emergency broadcast construction. By comparing three technologies of dual tone multiple frequency, digital watermarking and medium wave digital broadcasting, we apply the existing medium wave broadcast to emergency broadcasting system to further consummate our country public emergency broadcasting system.