Development of UAVs (ang. unmanned aerial vehicles) has changed everyday work routine in different professions, especially in geodesy, where close-range aero photogrammetry and airborne laser scanning (ALS) present new opportunities and methods in the meaning of faster and more efficient collection of spatial data. As with every technology, there are also some advantages and disadvatanges that users need to be acquainted with. It is important, that we combine different geodetic methods (classic geodetic survey, GNSS-RTK method, close-range aero photogrammetry, ALS) for best results. We have analysed height differences between three methods on three different worksites and compared results that were delivered from terrestrial geodetic survey, aero photogrammetric point cloud and ALS point cloud. RMSE of height differences between terrestrial geodetic survey and close-range aero photogrammetry was on average 0,05 m. Between terrestrial geodetic survey and airborne laser scanning was on average 0,16 m.
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