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Article

Application of Fixed-Wing UAV-Based Photogrammetry Data for Snow Depth Mapping in Alpine Conditions

1
Department of Geography and Geology, Faculty of Natural Sciences, Matej Bel University, Tajovskeho 40, 974 09 Banska Bystrica, Slovakia
2
Avalanche Prevention Center, Mountain Rescue Service of Slovakia, 033 01 Liptovsky Hradok, Slovakia
*
Author to whom correspondence should be addressed.
Academic Editors: Higinio González Jorge and Luis Miguel González de Santos
Drones 2021, 5(4), 114; https://doi.org/10.3390/drones5040114
Received: 24 August 2021 / Revised: 29 September 2021 / Accepted: 6 October 2021 / Published: 11 October 2021
(This article belongs to the Special Issue Advances in Civil Applications of Unmanned Aircraft Systems)
UAV-based photogrammetry has many applications today. Measuring of snow depth using Structure-from-Motion (SfM) techniques is one of them. Determining the depth of snow is very important for a wide range of scientific research activities. In the alpine environment, this information is crucial, especially in the sphere of risk management (snow avalanches). The main aim of this study is to test the applicability of fixed-wing UAV with RTK technology in real alpine conditions to determine snow depth. The territory in West Tatras as a part of Tatra Mountains (Western Carpathians) in the northern part of Slovakia was analyzed. The study area covers more than 1.2 km2 with an elevation of almost 900 m and it is characterized by frequent occurrence of snow avalanches. It was found that the use of different filtering modes (at the level point cloud generation) had no distinct (statistically significant) effect on the result. On the other hand, the significant influence of vegetation characteristics was confirmed. Determination of snow depth based on seasonal digital surface model subtraction can be affected by the process of vegetation compression. The results also point on the importance of RTK methods when mapping areas where it is not possible to place ground control points. View Full-Text
Keywords: UAV; photogrammetry; digital surface model; snow depth UAV; photogrammetry; digital surface model; snow depth
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MDPI and ACS Style

Masný, M.; Weis, K.; Biskupič, M. Application of Fixed-Wing UAV-Based Photogrammetry Data for Snow Depth Mapping in Alpine Conditions. Drones 2021, 5, 114. https://doi.org/10.3390/drones5040114

AMA Style

Masný M, Weis K, Biskupič M. Application of Fixed-Wing UAV-Based Photogrammetry Data for Snow Depth Mapping in Alpine Conditions. Drones. 2021; 5(4):114. https://doi.org/10.3390/drones5040114

Chicago/Turabian Style

Masný, Matej, Karol Weis, and Marek Biskupič. 2021. "Application of Fixed-Wing UAV-Based Photogrammetry Data for Snow Depth Mapping in Alpine Conditions" Drones 5, no. 4: 114. https://doi.org/10.3390/drones5040114

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