Results 41 to 50 of about 2,144 (170)

Deep Reinforcement Learning Based Autonomous Decision‐Making for Cooperative Uncrewed Aerial Vehicles: A Search and Rescue Real World Application

Journal of Field Robotics, EarlyView.
ABSTRACT This paper presents the first end‐to‐end framework that combines guidance, navigation, and centralized task allocation for multiple UAVs performing autonomous search‐and‐rescue (SAR) in GNSS‐denied indoor environments. A twin delayed deep deterministic policy gradient controller is trained with an artificial potential field (APF) reward that ...
Thomas Hickling, Maxwell Hogan, Abdulla Tammam, Nabil Aouf   +3 more
wiley   +1 more source

Getting around Antarctica: new high-resolution mappings of the grounded and freely-floating boundaries of the Antarctic ice sheet created for the International Polar Year [PDF]

, 2011
The boundary of grounded ice and the location of ice transitioning to a freely floating state are mapped at 15-m resolution around the entire continent of Antarctica.
Rotschkly, G., R. Drews, Corr, H., P. Vornberger, Fricker, Helen, Bindschadler, R., Brunt, K., R. Bingham, A. Wichlacz, Young, N., Bohlander, Jennifer, Wichlacz, Amy, L. Padman, Urbini, S., Padman, Laurie, Corr, Hugh, Bingham, Robert George, Vornberger, P., K. Brunt, Kohler, Jack, Rack, Wolfgang, Hall, M., Young, Neal, Kohler, J., Hindmarsh, Richard, Bindschadler, Robert, H. Choi, M. Hall, Fricker, H., Hindmarsh, R., Choi, Hyeungu, Hall, Monica, Brunt, Kelly, Choi, H., R. Bindschadler, Bohlander, J., Wichlacz, A., H. Fricker, N. Young, Vornberger, Patricia, Padman, L., Drews, R., H. Corr, Rack, W., W. Rack, S. Urbini, Urbini, Stefano, Rotschky, G., Bingham, B., Rotschky, Gerit, J. Bohlander, Drews, Reinhard, Bingham, R., R. Hindmarsh, J. Kohler, G. Rotschky   +55 more
core   +1 more source

Effects of Wintertime Snow Depth Assimilation on Summertime Sea Ice Prediction Experiments Utilizing a Fully Coupled Regional Arctic Model With Perfect Boundary Conditions

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract During the past decades, the rapid decline of sea ice in the Arctic Ocean has substantially favored commercial navigation activities in the summertime. Numerical sea ice prediction on a seasonal scale plays a crucial role in guiding the programme of such activities, yet the role of snow depth data assimilation in numerical sea ice prediction ...
Xi Liang, Chengyan Liu, Xichen Li, Zhongxiang Tian, Zhuoming Ding, Fu Zhao, Ming Li, Na Liu, Jiaying Huang   +8 more
wiley   +1 more source

Ajustamento simultâneo do bloco de faixas do laser scanner aerotransportado (ALS) [PDF]

, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Civil, Florianópolis, 2008A discrepância vertical na zona de sobreposição lateral é uma distorção da medida original de difícil ...
Temba, Plinio da Costa
core  

Advancing High‐Resolution Lake Bathymetry Reconstruction Through Geomorphologically Informed Deep Learning in High Mountain Asia

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract Accurate three‐dimensional (3D) lake bathymetry reconstruction is critical for water resources assessment and hydrological modeling yet remains constrained by data scarcity and oversimplified geometric assumptions. To address these challenges, we propose the Geomorphologically informed deep learning (GIDL) framework for high‐resolution 3D lake
Minglei Hou, Jiamu Chen, Jiahua Wei, Yang Shi, Wenqian Zhang, Shengling Hou, Zhen Qiao, Jianshi Zhao   +7 more
wiley   +1 more source

Sub-canopy terrain modelling for archaeological prospecting in forested areas through multiple-echo discrete-pulse laser ranging: a case study from Chopwell Wood, Tyne & Wear [PDF]

, 2011
Airborne Light Detection and Ranging (LiDAR) technology is assessed for its effectiveness as a tool for measuring terrain under forest canopy. To evaluate the capability of multiple-return discrete-pulse airborne laser ranging for detecting and resolving
LANDY, JACK
core  

Integrating Olivine Diffusion Chronometry With Monitoring Data to Decipher the Magma Dynamics at the Submarine Fani Maoré Volcano

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Monitoring data are critical for understanding volcanic unrest and eruption, but they often lack the ability to constrain the pre‐eruptive magma processes. As such, an increasing number of studies couple monitoring data with petrological tools to obtain insights into the causes and durations of magmatic processes. The 2018–2020 eruption of the
Karoline Brückel, Etienne Médard, Fidel Costa, Carole Berthod, Pauline Verdurme, Patrick Bachèlery, Lise Retailleau, Jean‐Christophe Komorowski, Lucia Gurioli   +8 more
wiley   +1 more source

Smoothed monthly Greenland ice sheet elevation changes during 2003–2023 [PDF]

Earth System Science Data
The surface elevation of the Greenland Ice Sheet is constantly changing due to the interplay between surface mass balance processes and ice dynamics, each exhibiting distinct spatiotemporal patterns.
S. A. Khan, H. Seroussi, M. Morlighem, W. Colgan, V. Helm, G. Cheng, D. Berg, V. R. Barletta, N. K. Larsen, W. Kochtitzky, M. van den Broeke, K. H. Kjær, A. Aschwanden, B. Noël, J. E. Box, J. A. MacGregor, R. S. Fausto, K. D. Mankoff, K. D. Mankoff, I. M. Howat, K. Oniszk, D. Fahrner, A. Løkkegaard, E. Y. H. Lippert, A. Bråtner, J. Hassan   +25 more
doaj   +1 more source

ICESat-2 for Coastal MSS Determination—Evaluation in the Norwegian Coastal Zone

Remote Sensing, 2023
Radar satellite altimeters enable the determination of the mean sea surface to centimeter accuracy, which can be degraded in coastal areas because of the lack of valid altimetry observations due to land contamination and the altimeter footprint size.
Matea Tomić, Ole Baltazar Andersen
doaj   +1 more source

Diagnosing Kinetic Energy Scaling Using Lagrangian and Eulerian Metrics in Different Dynamical Regimes of the North Atlantic

Journal of Geophysical Research: Oceans, Volume 131, Issue 6, June 2026.
Abstract Understanding the multiscale dynamics of ocean surface turbulence requires diagnostics that reliably characterize variability at scales both larger and smaller than the Rossby radius of deformation. This study evaluates the consistency and interpretability of second‐order velocity structure functions derived from Eulerian and Lagrangian ...
I. Leimann, M. Epke, J. Dräger‐Dietel, A. Griesel, M. Walter, L. Linardakis, P. Korn, N. Brüggemann   +7 more
wiley   +1 more source