System Software Testing of Laser Tracker Leica AT401


  • Filip Dvořáček Department of Special Geodesy, Faculty of Civil Engineering, Czech Technical University in Prague Thákurova 7, 166 29 Prague 6, Czech Republic



laser tracker, absolute distance measurement, Leica AT401, system software er- ror, group refractive index of air


The article introduces a group of instruments called laser trackers and specificallyfocuses on one of them - Leica AT401. At the Research Institute of Geodesy, To-pography and Cartography the instrument has been tested both in laboratory andoutdoor conditions. Several significant errors in the instrument’s system softwarehave been found, mostly due to the creation of user-programmed controlling appli-cation called ATControl. The errors are related to a selection, a computation andan evaluation procedure of the refractive index of air. Finally, notes of the newmeasurement modes of Leica AT40x are given and a range of distance measure-ment is discussed.

Author Biography

Filip Dvořáček, Department of Special Geodesy, Faculty of Civil Engineering, Czech Technical University in Prague Thákurova 7, 166 29 Prague 6, Czech Republic


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