In the graduation thesis it is discussed unmanned aerial vehicles and their usage in geodetic data acquisation for the purpose of generating Digital Terain Models. In the thesis we firstly show the structure, operation, historical evolution of development of the UAVs and the legislation framme of their usage in European Air space. »Rodemap for the integration of the civil Remotely – Piloted Aircraft Systems (RPAS) into the European Aviation System« is introduced. It discusses Airspace as work space for realization of RPAS tasks as well as media for Communication link using broad bands and as Command link using elektro magnetic waves. The method for Quality assessment of Digital Terrain Models as written in european recommendation EuroSDR is presented on the practical
example in my thesis. As practical usage of UAVs in geodetic practice the method of photogrammetric point cloud derivation, implemented in slovenian companies softwear called Modri planet is desribed. The quality of derivated DTM as recommended in EuroSDR is assessed. The test site chosen and measured for practical use of photogrammetric point cloud is described. We described several methods of raw point cloud filtering with the purpose of creating terrain representing point cloud. The described methods matter usage of 3Dsurvey, Matlab, MeshLab, MS Access and ArcGIS softwear. The proces of quality assessment is presented in practical usage on the test field measurements as well as their findings.