全站仪坐标测量精度评定方法探讨

Research on the Evaluating Method of Total Station Coordinate Measuring Accuracy

全站仪坐标测量在航空航天、大型设备制造业、特种异形工程和计量检测等领域有广泛应用,其坐标测量误差是最受关注的精度指标。基于激光跟踪仪建立高精度三维检校场,以空间绝对坐标基准来检定全站仪坐标测量外符合精度。设计了碳纤维基准尺以引入长度基准,检定全站仪长度测量误差。通过建立强制对中墩和测定加常数等方法,严格控制全站仪自身系统误差。基于多站公共点定向原理,检定全站仪坐标测量内符合精度。将该方法应用于检定TDA5005、TS30和MS05A等工业全站仪坐标测量精度,取得了良好效果。

Three dimensional calibrating fields was built based on laser tracker to check the absolute coordinate accuracy of total station in this paper. Absolute standard length of carbon-fibre ruler was putted in to check the absolute distance measuring accuracy. By the methods of building force-centering pillar and measuring constant of total station, self-system errors were controlled. And the self-accuracy of total station coordinate measuring was achieved by the theory of common point's direction. At last, this method was applied to check the coordinate measuring accuracy of TDA5005, TS30 and MS05 A, and the result was good.