利用激光跟踪仪检测全站仪标准基线长度可行性分析

Feasibility Analysis of Using Laser Tracker to Calibrate the Standard Baseline Length of Total Station

现行的GB/T16789-2019《比长基线测量规范》规定全站仪测距长度基线场采用因瓦基线尺测量的方法进行检定,其过程繁琐,且成本较大。通过对激光跟踪仪距离测量精度的分析和检测实验结果,对比了同一个标准基线场分别利用激光跟踪仪测量和因瓦基线尺测量的结果及其若干项精度指标,以及通过对比用两种基线长度分别计算出的若干台高精度智能型全站仪的加乘常数及其中误差,论证了激光跟踪仪的长度测量精度是可以满足全站仪测距长度基线场检定的要求,且精度比因瓦基线尺测量的结果更高,测量效率也大为提高。

The current GB/T 16789-2019"Baseline Survey Standard"stipulates that the total station baseline is determined by the method of measuring the baseline of the invar,which is cumbersome and costly.Based on the a-nalysis of the distance measurement accuracy of laser tracker and the test results,the measurement results of the same standard baseline field using laser tracker and invar baseline ruler and some precision indexes are compared,and the multiplication constant and its error of several high-precision intelligent total stations calculated by two baseline lengths are compared,it is demonstrated that the length measurement accuracy of laser tracker can meet the requirements of total station distance measurement length baseline field verification,and the accuracy is higher than that of invar baseline ruler,and the measurement efficiency is greatly improved.