温度对DiNi12数字水准仪i角误差的影响及应对措施

摘要

i角误差的大小和稳定是保证水准测量精度的一个重要条件,在实际观测中发现,DiNi12数字水准仪的i角误差不稳定,有随温度的升高而变化的趋势.通过对不同温度下的i角误差的观测,积累一定的观测数据,找出i角误差的变化规律,并采取多种措施最大限度减小i角误差对观测资料的影响,提高观测精度.%It is discovered in the actual observations that the Angle i error of DiNi12 Digital Leveller is unstable and changeable and has the trend of changing with the rise of temperature. The magnitude and stability of Angle i error is one important condition to guarantee the precision of level measurement. Through observation of Angle i errors under different temperatures, accumulating observation data, finding out the changing pattern of Angle i errors and finally taking various kinds of measures, the influence of Angle i error on observation data is reduced to the maximum extent and the precision of observation is increased.