Results 41 to 50 of about 255,039 (224)

Optimizing the Spatial Structure of Metasequoia Plantation Forest Based on UAV-LiDAR and Backpack-LiDAR

Remote Sensing, 2023
Optimizing the spatial structure of forests is important for improving the quality of forest ecosystems. Light detection and ranging (LiDAR) could accurately extract forest spatial structural parameters, which has significant advantages in spatial optimization and resource monitoring. In this study, we used unmanned aerial vehicle LiDAR (UAV-LiDAR) and
Chao Chen, Lv Zhou, Xuejian Li 0002, Yinyin Zhao, Jiacong Yu, Lujin Lv, Huaqiang Du   +6 more
openaire   +3 more sources

Individual Tree Canopy Parameters Estimation Using UAV-Based Photogrammetric and LiDAR Point Clouds in an Urban Park

Remote Sensing, 2021
Estimation of urban tree canopy parameters plays a crucial role in urban forest management. Unmanned aerial vehicles (UAV) have been widely used for many applications particularly forestry mapping.
Ebadat Ghanbari Parmehr, Marco Amati
doaj   +1 more source

Unmanned Aerial Vehicle (UAV) for monitoring soil erosion in Morocco [PDF]

, 2012
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,
D'Oleire-Oltmanns, Sebastian, Irene Marzolff, Johannes B. Ries, Marzolff, Irene, Ries, Johannes B., Klaus Daniel Peter, Peter, Klaus Daniel, Sebastian D\u27Oleire-Oltmanns   +7 more
core   +1 more source

An investigation of detecting potholes with UAV LiDAR and UAV Photogrammetry

, 2021
Potholes are caused by erosion and as such always emerging on our roadnetwork. Potholes may not only cause great damages to vehicles, but can alsocause road accidents, which in the worst case are fatal. Today, the detection ofpotholes is usually based on citizen reports or ocular inspection by vehicle,where a loose description of the potholes ...
Hedenström, Linus, Eriksson, Sebastian
openaire   +1 more source

Enhancing GRU-Based DRL with Delta-LiDAR for Robust UAV Navigation in Partially Observable Dynamic Environments [PDF]

Partial observability and sensor limitations are challenging for the navigation of autonomous Unmanned Aerial Vehicles (UAVs). Deep Reinforcement Learning (DRL) algorithms have emerged as potential tools in advancing this field.
Khudher, Dhayaa Raissan; Lecturer/Researcher, Department of Computer Engineering, University of Basrah, Basrah, Iraq. Research interests: machine learning for control, robotics, UAV systems., Haddad, Maryam Allawi; M.Sc. Student, Department of Computer Engineering, University of Basrah, Iraq   +1 more
core   +1 more source

Intercomparison of Water Vapor Data Measured with Lidar during IHOP_2002. Part I: Airborne to Ground-Based Lidar Systems and Comparisons with Chilled-Mirror Hygrometer Radiosondes [PDF]

, 2007
The water vapor data measured with airborne and ground-based lidar systems during the International H2O Project (IHOP_2002), which took place in the Southern Great Plains during 13 May–25 June 2002 were investigated.
Wulfmeyer, Volker, R. FERRARE, E. V. BROWELL, Ferrare, Richard, J. WANG, Ismail, Syed, S. KOOI, D. SUMMA, Schaberl, Thorsten, B. B. DEMOZ, Andreas Behrendt, Richard Ferrare, Whiteman, David N., T. SCHABERL, S. ISMAIL, DI GIROLAMO, Paolo, V. WUFMEYER, Demoz, Belay B., A. BEHRENDT, Kooi, Susan, Ehret, Gerhard, Summa, Donato, Demoz, Belay, Browell, Edward V., Kiemle, Christoph, Volker Wulfmeyer, Wang, Junhong, Behrendt, Andreas, Christoph Kiemle, Paolo Di Girolamo, D. N. WHITEMAN, Gerhard Ehret, Donato Summa, Syed Ismail, Belay B. Demoz, Bauer, Hans-Stefan, C. KIEMLE, Susan Kooi, H. S. BAUER, David N. Whiteman, Thorsten Schaberl, Junhong Wang, Browell, Edward, Girolamo, Paolo, G. EHRET, Edward V. Browell, Hans-Stefan Bauer, Whiteman, David   +47 more
core   +1 more source

Fusion of Visual-Inertial Odometry With LiDAR Relative Localization for Cooperative Guidance of a Micro-Scale Aerial Vehicle

IEEE Access
A novel relative localization approach for guidance of a micro-scale Unmanned Aerial Vehicle (UAV) by a well-equipped aerial robot fusing Visual-Inertial Odometry (VIO) with Light Detection and Ranging (LiDAR) is proposed in this paper.
Vaclav Pritzl, Matous Vrba, Petr Stepan, Martin Saska   +3 more
doaj   +1 more source

Leveraging Big Multitemporal Multisource Satellite Data and Artificial Intelligence for the Detection of Complex and Invisible Features: The Case of Extensive Irrigation Mapping

Archaeological Prospection, EarlyView.
ABSTRACT The detection of buried or obscured archaeological features remains a central challenge in landscape archaeology, particularly in the irrigated floodplains of Mesopotamia where levees and canals formed the basis of complex agrarian systems. This study presents a deep learning–based approach for the large‐scale, automated detection of ancient ...
Nazarij Buławka, Hector A. Orengo, Felipe Lumbreras Ruiz, Iban Berganzo‐Besga, Ekta Gupta   +4 more
wiley   +1 more source

THE DESIGN AND TESTING OF A LIDAR PLATFORM FOR A UAV FOR HERITAGE MAPPING [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
In the discovering, identifying and mapping work of heritage objects in forest or desert areas, LiDAR ensures work efficiency and can provide the most complete and accurate 3D data.
Z. Li, Y. Yan, Y. Jing, S. G. Zhao
doaj   +1 more source

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source