Church belfries were determined in horizontal plane as well as the heights in the trigonometric networks of the old Slovene coordinate system D48/GK. Geodetic points on the church belfries served as reference points in detail surveying. Since the implementation of the new coordinate system D96/TM the geodetic points are determined by use of space geodetic methods and consequently church belfries are not as important as in the D48/GK era. A lot of old geodetic reference points of trigonometric networks were damaged or demolished, but church belfries are inaccessible so they remain and today serve as a transition between the old D48/GK to the new coordinate system D96/TM. In the master's thesis we combined terrestrial measurements and the free-network least squares adjustment with further use of the S-transformation to determine six geodetic points of church belfries from the south-western part of Ljubljana. New coordinates were transformed to the old coordinate system and compared with the coordinates from topographies.
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