全站仪高程测量及精度分析

The Triangle Elevation Survey and Accuracy Analysis of the Total Station Instrument

简要叙述全站仅单向和对向观测高差的原理，提出大气折光系数的测定方法和减弱大气折光影响的措施，并对对向观测高差的精度进行分析，指出为了保证测定高差的精度，提高竖直角的观测精度和了如限制视线长度是必要的。

This paper presents the principle of observing elevation difference in single and reciprocal observations by using the TSI, puts forward the method of measuring the atmospheric refraction coefficient and the manner of decreasing the influence of the coefficient,and indicates that it is necessary to promote the observation accuracy of the vertical angle and limit the length of sight line to ensure the accuracy of observing elevation difference.