全站仪似水准法和对向法高程测量的比较研究  

A comparative research on quasi-level height surveying and subtend trigonometric leveling with total station

作　　者：魏东升[1] 李星照[1] 

机构地区：[1]中南林业科技大学,长沙410004

出　　处：《测绘科学》2008年第1期152-154,共3页Science of Surveying and Mapping

基　　金：中南林业科技大学青年科学基金(06027B)

摘　　要：通过对似水准法和对向法高程测量原理、误差来源及精度的比较分析,我们发现随着距离和竖直角度的增大,对向法高程测量中误差的变化大于似水准法高程测量中误差的变化;当两观测点间的水平距离小于等于1km时,对向法高程测量精度一般高于似水准法高程测量精度,但是当两观测点间的水平距离大于1km时,似水准法高程测量精度一般高于对向法高程测量精度。This paper analyzes comparatively the principle, error sources and precision of quasi-level height surveying and subtend trigonometric leveling, And the research results show that the range of mean square error of subtend trigonometric leveling is larger than quasi-level height surveying with distance and vertical angle enlargement.Measuring accuracy of subtend trigonometric leveling is generally higher than quasi-level height surveying when the horizontal distance between two observation points is no more than 1km.But when the horizontal distance between two observation points is no less than 1km, Measuring accuracy of quasi-level height surveying is generally higher than subtend trigonometric leveling.

关 键 词：对向观测法 似水准法 精度 比较分析 

分 类 号：P224.2[天文地球—大地测量学与测量工程]