基于离散点拟合算法的地面数字电视单频网重叠区分析  

The Analysis of Overlapping Area of Digital Terrestrial Television Single Frequency Network Based on Discrete-Point Fitting Algorithm

作　　者：孙晓光 SUN Xiaoguang(Laiyang Integrated Media Center,Yantai 265200,China)

机构地区：[1]莱阳市融媒体中心,山东烟台265200

出　　处：《电视技术》2024年第4期95-98,共4页Video Engineering

摘　　要：对于地面数字电视而言,对单频网重叠覆盖区(以下简称重叠区)进行信号分析是提升该区域信号接收性能的重要基础。通过分析单频网重叠区“信号自扰”的现象和原因,采用“离散点拟合”算法,准确给出既定信号参数条件下的重叠区,并提出重叠区内有效解调信号的基础条件。通过仿真实验对该方法的可行性和有效性进行验证,达到了预期效果。For terrestrial digital television,the signal analysis of the overlapping coverage area of the single frequency network(hereinafter referred to as the overlapping area)is an important basis for improving the signal reception performance in this area.In this paper,the phenomenon and cause of"signal self-interference"in the overlapping area of single frequency network are analyzed,and the overlapping area under given signal parameters is accurately given by using the discrete point ftting algorithm.The feasibility and effectiveness of this method are verified by simulation experiments,and the expected effect is achieved.

关 键 词：地面数字电视 单频网 重叠覆盖区 拟合算法 分析与仿真 

分 类 号：TN934.2[电子电信—信号与信息处理]