平均曲率半径对电磁波测距三角高程测量的影响分析  

Analysis of the Influence of Mean Radius of Curvature on EDM-trigonometric Leveling

作　　者：张成增[1] 丁璐 李增星 芦小勇 ZHANG Chengzeng;DING Lu;LI Zengxing;LU Xiaoyong(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China;Shaanxi Lanhe Hydropower Development Corporation Limited,Ankang 725000,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]陕西岚河水电开发有限责任公司,陕西安康725000

出　　处：《西北水电》2023年第4期50-53,共4页Northwest Hydropower

基　　金：中国电建集团西北勘测设计研究院有限公司科技项目(XBY-KJ-2019-05).

摘　　要：电磁波测距三角高程测量高差计算与地球平均曲率半径有关。以国家三、四等水准测量的精度要求为基准,根据电磁波测距三角高程测量原理与误差传播定律,结合微小误差取舍准则,探讨了不同大气折光环境下地球平均曲率径取值精度对高差测量精度的影响,取得了对地球平曲率半径取值精度的正确认识。The elevation difference calculation of EDM-Trigonomeric Leveling is related to the mean radius of curvature.Based on the precision requirements of Specifications for the third and fourth order leveling,in accordance with the principle of EDM-trigonomeric Leveling and the law of error propagation,combined with the minor error selection criterion,the influence of the accuracy of the mean radius of curvature on the accuracy of elevation difference measurement under different atmospheric refraction is discussed and a correct understanding of the mean radius of curvature is obtained.

关 键 词：电磁波测距三角高程测量 平均曲率半径 微小误差取舍准则 测量误差 

分 类 号：TV221.1[水利工程—水工结构工程]