摘要
大气垂直折光是影响三角高程测量精度的主要因素,三角高程测量单向观测中大气折光系数K值的取值关乎球气差改正值的大小。本文将结合实际测量工作,根据几何水准往返测量和三角高程对向观测数据,利用两种反演方法计算区域的K值,在三角高程测量单向观测高差加入不同参数的球气差改正,并对改正后高差进行检核验证,从而得到一个更贴合实际的K值,并对实际测量工作中K值的取值和计算进行一个探讨。
Atmospheric vertical refraction is the main factor affecting the accuracy of triangular elevation measurement.The value of atmospheric refraction coefficient K in unidirectional observation of triangular elevation measurement is related to the size of spherical air difference correction.This paper will be combined with the actual measurements,according to the level of geometric measurement and triangle elevation on back and forth to the observation data,the K value of the two kinds of inversion method is used to calculate area,one-way observed altitude difference in trigonometric leveling to join the different parameters of ball gas correction,and the correct elevation difference after check verification,to get a more practical values of K,The value and calculation of K in actual measurement work are also discussed.
作者
张豫宁
陈裕汉
彭晨
Zhang Yuning;Chen Yuhan;Peng Chen(Faculty of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;West Yunnan University of Applied Technology,Dali 671009,China;Yunnan Institute of Surveying and Mapping Engineering,Kunming 650033,China)
出处
《城市勘测》
2022年第3期80-83,共4页
Urban Geotechnical Investigation & Surveying
关键词
三角高程测量
大气折光系数K值
反演
球气差改正
triangular elevation survey
atmospheric refraction coefficient K value
inversion
spherical air difference correction
