智能全站仪精密三角高程测量替代二等水准测量

鉴于用传统几何水准的方法进行垂直位移监测存在效率低、受环境和地形因素影响大等问题,探讨了用智能全站仪进行精密三角高程测量来监测垂直位移。简述了TCA2003全站仪的自动目标识别(ATR)功能和使用方法,研究了ATR精密三角高程测量的误差来源及精度;结合在某大坝的实践,分析了TCA2003全站仪ATR三角高程测量的实测精度及其替代二等水准测量的可行性和可靠性,给出了智能全站仪精密三角高程测量替代二等几何水准测量的条件、减弱误差的方法及提高精度的措施等。

Substitution of Intelligent Total Station Trigonometric Leveling for Second-order Leveling

The traditional geometry standard method used in the vertical displacement observation is proved inefficient and too sensitive to the environment and terrains.So this paper discusses the use of intelligent total station in precise trigonometric leveling for the vertical displacement observation.The automatic target recognition(ATR) function and its uses are briefly introduced;the error sources and precision of trigonometric leveling with ATR of total station TCA2003 are researched.Based on the application of ATR to a dam,the actual precision of trigonometric leveling with ATR and its feasibility and reliability of substitution for second-order leveling are analyzed.Finally,the conditions for such substitution and methods for decreasing errors and improving the precision are proposed.