红外测距仪代替三、四等水准误差分析

Error Analysis by Using Infrared Range—Measurement System Instead of the Third or Fourth Grade Levelling

红外测距仪三角高程代替三、四等水准测量，备受广大测绘工作者的关注，通过我队近几年来在松华坝、渔洞水库、柴石滩水库、高桥电站等不同地区，不同条件下大量数量与几何同等级水准精度的比较试验，是可行的。由此总结出在云南高原地区进行红外仪三角高程代替三、四水准，所产生误差的规律性，并制定一套较实用的操作规程。

Close attention is paid fully to more and more surveyors by using infrared range-measurement system instead of the third or fourth grade levelling. Conparative tests have been made successfully with a large number of similar geometric and accuracy levelling under various circumstances and in different regions such as Songhua Dam, Yudong Reservoir, Chaishitan Reservoir and Gaoqiao Hydropower Station. The regularity of error and practical instructions are summarized for using infrared range-measurement system instead of the third of fourth grade levelling on Yunnan Plateau.