内蒙古中波地导数据测试验证  

Test and Verification of MW Ground Guide Data in Inner Mongolia

作　　者：胡宝林 Hu Baolin(Radio and Television Bureau of Inner Mongolia Autonomous Region,Inner Mongolia 010000,China)

机构地区：[1]内蒙古自治区广播电视局781台,内蒙古自治区010000

出　　处：《广播与电视技术》2020年第6期119-121,共3页Radio & TV Broadcast Engineering

摘　　要：掌握中波广播地波的传播特性,进而准确判定各中波广播台的覆盖范围,是广播电视科技工作者孜孜以求的目标。研究表明,发射参数确定之后,中波地波传播很大程度上取决于传输路径上的大地电导率值分布情况,本文提出了采用地表分类映射大地电导率值的方法制作大地电导率图层,用于专业频率规划软件平台的中波地波覆盖预测,同时在内蒙古选取了部分中波台开展地波场强野外测试验证,进一步验证了采用地表分类映射大地电导率的方法制作的中波地导图层的准确性。It is the goal of radio and television scientists and technologists to master propagation characteristics of MW ground waves and then accurately determine coverage area of each MW radio station.Studies have shown that after launch parameters are determined,propagation of MW ground wave largely depends on distribution of geoelectric conductivity value on transmission path.In this paper,the method of mapping geoelectric conductivity value by surface classification is proposed to make geoelectric conductivity grid layer,which is used for coverage prediction of MW ground wave in professional frequency planning software platform.At the same time,some MW stations are selected to carry out field test and verification of ground wave field strength in Inner Mongolia,which further verifies accuracy of MW ground conduction grid layer made by method of mapping geoelectric conductivity by surface classification.

关 键 词：中波 地波 传播 大地电导率 

分 类 号：TN934.1[电子电信—信号与信息处理]