嵩县山区大气垂直折光系数的变化分析

Variation analysis of vertical atmosphere refraction in mountain area of Songxian

依据嵩县山区大地控制网的测量数据,分析了大气垂直折光系数的变化规律。首先,分析影响大气垂直折光的因素;其次,确定折光系数的取值范围,利用三角高程测量原理推导其解算公式,并进行精度评定;然后,结合精密水准和三角高程的观测数据,计算大气垂直折光系数;最后,总结嵩县山区的大气垂直折光系数的变化规律,为相似地区的三角高程测量提供参考。

According to the geodetic control network survey data of Songxian mountain area,this paper analyzes the variation law of vertical atmosphere refraction.Firstly,this paper analyzes the factors affecting the vertical atmospheric refraction and explicitly demonstrates the range of refraction coefficient.Secondly,the calculating formula is deduced based on the principle of trigonometric leveling measurement,and the accuracy is evaluated.Then,the vertical atmosphere refraction coefficient is calculated via the observation data of precise leveling and trigonometric leveling measurement.Finally,the law of atmospheric vertical refraction in Songxian mountain area is summarized to provide reference experience for similar area trigonometric leveling.