Journal
REMOTE SENSING
Volume 4, Issue 11, Pages 3390-3416Publisher
MDPI
DOI: 10.3390/rs4113390
Keywords
UAV; SFAP; soil erosion; monitoring; photogrammetry
Categories
Funding
- German Research Foundation (Deutsche Forschungsgemeinschaft/DFG) [MA 2549/3, Ri 835/5]
- Vereinigung von Freunden und Forderern der Goethe-Universitat
- University of Trier
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This article presents an environmental remote sensing application using a UAV that is specifically aimed at reducing the data gap between field scale and satellite scale in soil erosion monitoring in Morocco. A fixed-wing aircraft type Sirius I (MAVinci, Germany) equipped with a digital system camera (Panasonic) is employed. UAV surveys are conducted over different study sites with varying extents and flying heights in order to provide both very high resolution site-specific data and lower-resolution overviews, thus fully exploiting the large potential of the chosen UAV for multi-scale mapping purposes. Depending on the scale and area coverage, two different approaches for georeferencing are used, based on high-precision GCPs or the UAV's log file with exterior orientation values respectively. The photogrammetric image processing enables the creation of Digital Terrain Models (DTMs) and ortho-image mosaics with very high resolution on a sub-decimetre level. The created data products were used for quantifying gully and badland erosion in 2D and 3D as well as for the analysis of the surrounding areas and landscape development for larger extents.
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