000K  utf8
1100  $c2022
1500  eng
2050  urn:nbn:de:gbv:8:3-2022-00668-5
2051  10.3390/drones6100277
3000  Stal, Cornelis
3010  Covataru, Cristina
3010  Hofmann, Robert
3010  Ignat, Theodor
3010  Lazar, Catalin
3010  Müller, Johannes
3010  Parnic, Valentin
4000  Supporting Long-Term Archaeological Research in Southern Romania Chalcolithic Sites Using Multi-Platform UAV Mapping  [Stal, Cornelis]
4209  Spatial data play a crucial role in archaeological research, and orthophotos, digital elevation models, and 3D models are frequently used for the mapping, documentation, and monitoring of archaeological sites. Thanks to the availability of compact and low-cost uncrewed airborne vehicles, the use of UAV-based photogrammetry matured in this field over the past two decades. More recently, compact airborne systems are also available that allow the recording of thermal data, multispectral data, and airborne laser scanning. In this article, various platforms and sensors are applied at the Chalcolithic archaeological sites in the Mostiștea Basin and Danube Valley (Southern Romania). By analysing the performance of the systems and the resulting data, insight is given into the selection of the appropriate system for the right application. This analysis requires thorough knowledge of data acquisition and data processing, as well. As both laser scanning and photogrammetry typically result in very large amounts of data, a special focus is also required on the storage and publication of the data. Hence, the objective of this article is to provide a full overview of various aspects of 3D data acquisition for UAV-based mapping. Based on the conclusions drawn in this article, it is stated that photogrammetry and laser scanning can result in data with similar geometrical properties when acquisition parameters are appropriately set. On the one hand, the used ALS-based system outperforms the photogrammetric platforms in terms of operational time and the area covered. On the other hand, conventional photogrammetry provides flexibility that might be required for very low-altitude flights, or emergency mapping. Furthermore, as the used ALS sensor only provides a geometrical representation of the topography, photogrammetric sensors are still required to obtain true colour or false colour composites of the surface.
4950  https://doi.org/10.3390/drones6100277$xR$3Volltext$534
4950  https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2022-00668-5$xR$3Volltext$534
4961  https://macau.uni-kiel.de/receive/macau_mods_00003105
5051  300
5051  333.7
5051  600
5051  900
5550  archaeological sites
5550  Chalcolithic
5550  southeastern Europe
5550  spatial data
5550  UAV