Abstract:
The paper presents the results of a test on the angular accuracy of a motorized tachymeter
recently used for precision traversing during the first fill of a portuguese large dam. Angular
measurements were carried out at two precision traverses, one at the crest of the dam and the
other at an inspection gallery. Horizontal angles were measured with the automatic target
recognition procedure of the motorized tachymeter and with a conventional electronic
theodolite, with prior equivalent accuracy. Statistical inference methods were used to test the accuracy of automatic angular measurement against conventional measurement.
