地面数字电视单频网覆盖干扰计算方法研究  

Research on the Interference Calculation Method for Digital Terrestrial Television in Single Frequency Network Coverage

作　　者：刘竹青 钟凤 李曦 张祖才 汤善武 Liu Zhuqing;Zhong Feng;Li Xi;Zhang Zucai;Tang Shanwu(Sichuan Radio and Television Transmission Center,Sichuan 610000,China;Chengdu Kaiteng Sifang Digital Broadcasting&TV Equipment Co.,Ltd.,Sichuan 610000,China)

机构地区：[1]四川广播电视发射传输中心,四川610000 [2]成都凯腾四方数字广播电视设备有限公司,四川610000

出　　处：《广播与电视技术》2024年第2期78-82,共5页Radio & TV Broadcast Engineering

摘　　要：在过去的文献中,关于地面数字电视单频网(SFN)覆盖干扰的问题,一直没有一套完整且严格的数学物理判定式,这导致行业内的研究方向出现了偏差和概念性的误解。为了消除由此引发的困惑和争议,本文提出了一套关于地面数字电视SFN覆盖干扰的判定定理,并制定了相关的判定规则和各种计算情形。为了验证这些理论在实际应用中的有效性,本文采用专业的预测软件ATDI对计算实例进行了模拟,实验结果证实了本文提出的方法和结论是正确的。在地面数字电视SFN的规划、设计和调试过程中,采用本文所描述的方法,将有助于找到一条减少网络干扰的有效路径。In previous literature,there was not a set of strict mathematical and physical determination formulas for the coverage interference of single frequency network(SFN),so that the research direction deviation and conceptual misunderstanding occurred in the industry.To eliminate the confusion caused by different opinions,the paper gives the determination theorem of SFN coverage interference,the relevant determination rules and various calculation cases.To verify the consistency between theory and practice,ATDI software is used to simulate the example,proving the correctness of the method and conclusion.When SFN is planned,designed and debugged,an implementation path to reduce network interference can be found by using the method described in the text.

关 键 词：单频网 欲收场强 非欲收场强 时延 

分 类 号：TN934[电子电信—信号与信息处理]