调频广播信号地下空间盲区纯直放补充覆盖的实验研究  

Experiment and Research on the Supplementary Coverage of Pure Direct Amplifier in the Underground Space of FM Broadcasting Signal

作　　者：李亮[1] 温怀疆[1] 罗明从 Li Liang;Wen Huaijiang;Luo Mingcong(Communication University of Zhejiang,Zhejiang 310018,China;Zhejiang Police Vocational Academy,Zhejiang 310018,China)

机构地区：[1]浙江传媒学院,浙江310018 [2]浙江警官职业学院,浙江310018

出　　处：《广播与电视技术》2022年第9期106-110,共5页Radio & TV Broadcast Engineering

基　　金：2020年浙江省基础公益研究项目“宽带声波的可调指向性扬声器阵列的研究与开发(GF20F010001)”资助。

摘　　要：本文阐述了调频广播信号在地下空间盲区(如地下停车场)采用纯直放补充覆盖实现的方法与实验研究,通过实验测试测得了三种直放电路的组合方式与实际放大效果,并从中选择了一种合适的组合方式用于地下空间盲区调频广播信号的纯直放覆盖,测量并研究了这种补充覆盖方式的实际效果,得到了一些测试数据和研究结论,同时提出基于现有条件实现调频广播地下空间盲区纯直接放大补充覆盖的一种行之有效的方案。This paper expounds the method and experimental research on pure direct amplification supplementary coverage of FM broadcasting signal in the blind area of underground space(such as underground parking lot).Through the experiments,the combination mode and actual amplification effect of three direct amplification circuits are measured,and a suitable combination mode is selected for pure direct amplification coverage of FM broadcasting signal in the basement.The actual effect of this supplementary coverage mode is measured and studied.Some test data and research conclusions are obtained.Lastly,this paper proposes an effective scheme to realize the pure direct amplification and supplementary coverage of the blind area of FM broadcasting underground space based on the existing conditions.

关 键 词：调频 广播 直放 覆盖 

分 类 号：TN934[电子电信—信号与信息处理]