基于FSK可变载频AM技术的中波应急广播覆盖网方案研究

Research on Medium Wave Emergency Broadcast Coverage Network Based on FSK Variable Carrier AM Technology

研究中波应急广播覆盖网的系统构成及构建方案,重点介绍应急广播系统的各个组成部分,包括应急广播播控平台、传输覆盖网络和接收终端网络,探讨应急广播中波调幅覆盖的技术细节,引入一种新型的频移键控(Frequency-Shift Keying,FSK)可变载频调幅(Amplitude Modulation,AM)技术,以确保特殊情况下满足传输数字信息的需求。通过MATLAB仿真验证,所提方案在音频和数字信号同步传输方面表现出良好的效果,为应急通信提供了可靠的技术支持。

This paper studies the system composition and construction scheme of medium wave emergency broadcast coverage network,focuses on the various components of the emergency broadcast system,including the emergency broadcast control platform,transmission coverage network and receiving terminal network,discusses the technical details of the amplitude modulation coverage of medium wave emergency broadcast,and introduces a new Frequency-Shift Keying(FSK)variable carrier frequency Amplitude Modulation(AM)technology to ensure the fulfillment of the need for digital information transmission in special circumstances.Through MATLAB simulation,the proposed scheme shows a good effect in the synchronous transmission of audio and digital signals,and provides a reliable technical support for emergency communication.