Reference : Upscaling UAS Paradigm to UltraLight Aircrafts: A Low-Cost Multi-Sensors System for L...
Scientific journals : Article
Life sciences : Multidisciplinary, general & others
Engineering, computing & technology : Multidisciplinary, general & others
http://hdl.handle.net/2268/247139
Upscaling UAS Paradigm to UltraLight Aircrafts: A Low-Cost Multi-Sensors System for Large Scale Aerial Photogrammetry
English
Latte, Nicolas mailto [Université de Liège - ULiège > Département GxABT > Gestion des ressources forestières et des milieux naturels >]
Gaucher, Peter []
Bolyn, Corentin mailto [Université de Liège - ULiège > Département GxABT > Gestion des ressources forestières et des milieux naturels >]
Lejeune, Philippe mailto [Université de Liège - ULiège > Département GxABT > Gestion des ressources forestières et des milieux naturels >]
Michez, Adrien mailto [Université de Liège - ULiège > Département de géographie > Département de géographie >]
16-Apr-2020
Remote Sensing
Multidisciplinary Digital Publishing Institute (MDPI)
12
8
Yes (verified by ORBi)
International
2072-4292
Basel
Switzerland
[en] UAV—UAS ; ultralight aircraft (ULA) ; image acquisition ; aerial mapping ; camera ; photogrammetry ; orthophotomosaic ; digital elevation model (DEM) ; remote sensing
[en] The use of unmanned aerial systems (UASs) has rapidly grown in many civil applications since the early 2010s. Nowadays, a large variety of reliable low-cost UAS sensors and controllers are available. However, contrary to ultralight aircrafts (ULAs), UASs have a too small operational range to efficiently cover large areas. Flight regulations prevailing in many countries further reduced this operational range; in particular, the “within visual line of sight” rule. This study presents a new system for image acquisition and high-quality photogrammetry of large scale areas (>10 km²). It was developed by upscaling the UAS paradigm, i.e., low-cost sensors and controllers, little (or no) on-board active stabilization, and adequate structure from motion photogrammetry, to an ULA platform. Because the system is low-cost (good quality-price ratio of UAS technologies), multi-sensors (large variety of available UAS sensors) and versatile (high ULA operational flexibility and more lenient regulation than for other platforms), the possible applications are numerous in miscellaneous research domains. The system was described in detail and illustrated from the flight and images acquisition to the photogrammetric routine. The system was successfully used to acquire high resolution and high quality RGB and multispectral images, and produced precisely georeferenced digital elevation model (DEM) and orthophotomosaics for a forested area of 1200 ha. The system can potentially carry any type of sensors. The system compatibility with any sensor can be tested, in terms of image quality and flight plan, with the proposed method. This study also highlighted a major technical limitation of the low-cost thermal infrared cameras: the too high integration time with respect to the flight speed of most UASs and ULAs. By providing the complete information required for reproducing the system, the authors seek to encourage its implementation in different geographical locations and scientific contexts, as well as, its combination with other sensors, in particular, laser imaging detection and ranging (LiDAR) and hyperspectral.
Gembloux Agro-Bio Tech
Accord-Cadre de Recherche et Vulgarisation Forestières
Researchers ; Professionals ; General public
http://hdl.handle.net/2268/247139
10.3390/rs12081265
https://www.mdpi.com/2072-4292/12/8/1265
https://doi.org/10.3390/rs12081265

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