基于延时自动同步的调频同步广播

FM Synchronous Broadcasting Based on Automatic Delay Synchronization

各地早年规划建设的单点大功率调频广播发射台,其覆盖范围内由于受地形或高大建筑物的阻挡容易产生阴影区。本文通过珠海船底山和唐家909台的调频同步广播工程,采用小功率的补点发射,较好解决了该问题。文中介绍了该工程整体概况,详细分析了两发射台的设备和FM射频信号的固定延时,微波传输信号源的链路延时,介绍了同步设备的参数设置并收测了工程结果数据。该工程的建设可为其他补点同步广播提供参考。

The coverage of single point high-power FM radio transmitting station constructed in early years is apt to produce shaded areas due to the obstruction of terrain or tall buildings.The low-power&interpolated points transmitting are adopted in FM synchronous broadcasting projects of No.909 Station in Chuandishan,Zhuhai and Tangjia.In this paper,the overall profile of the project is introduced.The fixed delay of equipment in two transmitting stations,the FM radio frequency signal and the link delay of the microwave transmitting signal source are all analyzed in detail.The parameters of synchronous equipment and the transmitters are introduced and measured.And the results and data of the projects are received and measured.This project may provide references for other interpolated points synchronous broadcasting.