全站仪三角高程替代四等水准测量精度分析

Precision analysis of triangle elevation survey of total station instrument to replace fourth-grade-leveling survey

根据全站仪三角高程测量的原理,推导了全站仪三角高程测量高差的公式,对全站仪三角高程测量影响高差的各种误差精度分析;并通过一个测设实例加以验证,得出了一个较为实用的结论,认为用全站仪三角高程测量完全可以替代四等水准测量,在一定条件下可以替代三等水准测量,能够满足相应的水准精度要求。

According to the theory of triangle elevation survey of total station instrument, the height difference formula is derived, and the errors of affecting height difference and its precision are analyzed in the paper, and is validated by an measuring instance. It is considered that triangle elevation survey of total station instrument can replace leveling in height survey and meet grades 3&4 leveling precision demand in a given limits.