EDM三角高程测量在变形监测中对大气垂直折光影响的研究  

The Effects of Atmospheric Vertical Refraction in EDM Trigonometrical Leveling

作　　者：张晓沪[1] 陆学智[1] 

机构地区：[1]上海岩土工程勘察设计研究院有限公司,上海200002

出　　处：《工程勘察》2008年第9期49-54,共6页Geotechnical Investigation & Surveying

摘　　要：大气垂直折光影响是限制精密三角高程测量外业观测精度的一项主要因素。为此,正确认识大气折光影响的规律,对指导生产作业,减弱或消除大气折光的影响具有重要的意义。本文阐述了大气折光系数K值的计算和试验研究成果,对各种作业方法和各项观测误差进行了比较分析,从而得出了若干结论和建议。R is the primary factor that the effects of atmospheric vertical refraction will cause the restraint in the accuracy of EDM precise trigonometrical leveling in field observation. Therefore, the rule of that should be studied in order to reduce or decrease such effects in EDM leveling. This paper introduces both the results from the experimental study on computing the coefficient of atmospheric refraction, and the analysis on the comparison of the errors in several observations. Some useful conclusions and suggestions on EDM precise trigonometrical leveling are also presented.

关 键 词：EDM精密三角高程测量 变形监测 大气垂直折光 

分 类 号：P224.3[天文地球—大地测量学与测量工程]