An Iron-ore mining site in Kiruna, Northern Sweden was repeatedly surveyed with a small unmanned aircraft system (UAS) on two different dates. Results show that the point
measurement accuracy was 0.8, 0.8 and 1.3 cm (RMS) in Easting, Northing and Height. The height accuracy (RMS) of individual grid points in the surface model (DSM) was 3 to 4 cm for smooth and vegetated horizontal surfaces and 5 to 8 cm for steep smooth and rough surfaces.
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measurement accuracy was 0.8, 0.8 and 1.3 cm (RMS) in Easting, Northing and Height. The height accuracy (RMS) of individual grid points in the surface model (DSM) was 3 to 4 cm for smooth and vegetated horizontal surfaces and 5 to 8 cm for steep smooth and rough surfaces.
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