Precision Analysis of Free-station Positioning in Total Station

摘要

This paper examines the precision analysis model provided according to the principle of indirect adjustment, to simulate the positioning accuracy at all different conditions including the location of station in total station, the accuracy of angular and side surveying, and compares the accuracy of free-station positioning for only two back-sight points. The results shown that the accuracy of side surveying for instrument has significant influence on positioning accuracy greater than that of angular survey, and the location of stationing points near to the connection line between two back-sight points was benefit for improving the accuracy of positioning.