Flight Height of UAV and Its Influence on the Precise Digital Elevation Model at Complex Terrain

• Autorzy: Nguyen Quoc Long , Goyal Ropesh , Le Van Canh , Cao Xuan Cuong , Pham Van Chung , Bui Ngoc Quy , Bui Xuan Nam , Bui Khac Luyen

Identyfikatory

DOI

10.29227/IM-2020-01-27

Warianty tytułu

PL

Wysokość lotu UAV i jego wpływ na precyzyjny cyfrowy model wysokości złożonego terenu

• Języki publikacji: EN

Abstrakty

EN

The application of lightweight Unmanned Aerial Vehicle (UAV) has been increasingly common in 3D topographic surveys. Especially in the complex terrains such as open-pit mines, where the elevation is rapidly undulating, the UAV based mapping is more efficient, economic and safe compared to the conventional methods. However, one of the most important factors in UAV mapping of complex terrain is the flight altitude which needs to be seriously considered because of the safety and accuracy of generated DEMs. This paper aims to evaluate the influence of flight height on accuracy of DEMs generated for open-pit mines. For this purpose, the selected study area is a quarry with complex terrain located in the Northern Vietnam. The investigation was conducted with five flight heights of 50 m, 100 m, 150 m, 200 m, and 250 m. To assess the accuracy of resulting DEMs, 10 ground control points and 385 checkpoints measured by both GNSS/RTK and total station methods were used. The accuracy of DEM was assessed by using root-mean-square error (RMSE) in X, Y, Z, XY, and XYZ components. The result showed that the DEM models generated at the flight heights of less than 150 m have high accuracy, RMSEs on the 10 GCPs increased from 1.8 cm to 6.2 cm for vertical (Z), and from 2.6 cm to 6.3 cm for horizontal (XY), whereas RMSE on 385 checkpoints increases gradually from 0.05 m to 0.15 m for vertical (Z) when the height flight increased from 50 m to 250 m.

PL

Zastosowanie lekkich bezzałogowych statków powietrznych (UAV) jest coraz bardziej powszechne w badaniach topograficznych 3D. Zwłaszcza w skomplikowanych terenach, takich jak kopalnie odkrywkowe, w których wzniesienie gwałtownie faluje, mapowanie oparte na UAV jest bardziej wydajne, ekonomiczne i bezpieczne w porównaniu z metodami konwencjonalnymi. Jednak jednym z najważniejszych czynników w mapowaniu UAV złożonego terenu jest wysokość lotu, którą należy poważnie rozważyć ze względu na bezpieczeństwo i dokładność generowanych DEM. Niniejszy artykuł ma na celu ocenę wpływu wysokości lotu na dokładność DEM generowanych dla kopalni odkrywkowych. W tym celu wybranym obszarem badawczym jest kamieniołom o złożonym terenie położony w północnym Wietnamie. Badanie przeprowadzono przy pięciu wysokościach lotu 50 m, 100 m, 150 m, 200 m i 250 m. Aby ocenić dokładność uzyskanych DEM, wykorzystano 10 naziemnych punktów kontrolnych i 385 punktów kontrolnych mierzonych zarówno metodami GNSS/RTK, jak i metodami stacji całkowitej. Dokładność DEM oceniono za pomocą błędu pierwiastkowego średniego kwadratu (RMSE) w komponentach X, Y, Z, XY i XYZ. Wynik pokazał, że modele DEM generowane na wysokościach lotu poniżej 150 m mają wysoką dokładność, RMSE na 10 GCP wzrosły z 1,8 cm do 6,2 cm dla pionu (Z) i od 2,6 cm do 6,3 cm dla poziomu (XY), podczas gdy RMSE na 385 punktach kontrolnych wzrasta stopniowo z 0,05 m do 0,15 m dla pionu (Z), gdy lot na wysokości wzrósł z 50 m do 250 m.

Słowa kluczowe

EN

UAV; DEM; accuracy; complex terrain; open-pit mines

PL

UAV; DEM; dokładność; złożony teren; kopalnie odkrywkowe

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2020
• Tom: no. 1, vol. 1
• Strony: 179--186
• Opis fizyczny: Bibliogr. 23 poz., tab., wykr., zdj.

Twórcy

autor

Nguyen Quoc Long

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Goyal Ropesh

• Indian Institute of Technology Kanpur, Kanpur-208016, Uttar Pradesh, India

autor

Le Van Canh

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Cao Xuan Cuong

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Pham Van Chung

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Bui Ngoc Quy

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Bui Xuan Nam

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

autor

Bui Khac Luyen

• Hanoi University of Mining and Geology, 18 Vien street, Hanoi, 100000

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).

W wersji drukowanej czasopisma autorzy: Bui Xuan Nam , Nguyen Quoc Long , Le Thi Thu Ha , Bui Ngoc Quy , Goyal Ropesh , Vo Trong Hung , Pham Van Chung , Cao Xuan Cuong , Le Van Canh , Le Hong Viet