全站仪测量的精度影响因素分析

Analysis of Factors Affecting the Accuracy of Total Station Instrument Measurement

通过对气象条件、全站仪棱镜常数、轴系误差、测量方式等因素进行实验,采用棱镜和面棱镜模式,量化气象条件对测量精度的影响.结果表明:测区温度每变化1℃,测量结果相差0.41 mm;气压变化1 kPa,测量结果相差1.1 mm.免棱镜模式下,被测目标颜色越浅,测量精度越高;测程越大,误差越大;导线点布设合理与否也影响测量精度.

Through the experiments on the meteorological conditions,the prism constant,the axis error and the measurement mode,the prism and the prism model were used to quantify the influence of meteorological conditions on the measurement accuracy.The results show that the temperature difference is 0.41 mm,the difference is 1 kPa meters,and the difference is 1.1 mm.In the prism free mode,the lighter the measured object is,the higher the measurement accuracy is.The larger the measuring range is,the greater the error is;whether the wire placement is reasonable or not will also affect the measurement accuracy.