Results 41 to 50 of about 19,257 (226)
Journal of Field Robotics, Volume 43, Issue 7, Page 4382-4401, October 2026.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 +3 more
wiley +1 more source
ALTIMETRY BY CASSINI RADAR: PROCESSING AND SIMULATION [PDF]
, 2009 The Cassini mission, that is a joint NASA/ESA/ASI effort, has recently offered the unique possibility of exploring Titan, the largest moon of Saturn, that is the only satellite in the solar system to host an appreciable atmosphere, which unfortunately ...
Alberti, Giovanni
core +1 more source
Multiparametric analysis and validation in the western Mediterranean of three global OGCM hindcasts
Scientia Marina, 2012 We analyse a hierarchy of three 1/4° global numerical simulations (ORCA-025.G70 (G70), ORCA-025.G85 (G85) and GLORYS1V1 (GLORYS)) by assessing their performance against observational data in the western Mediterranean.
Enrique Vidal-Vijande +5 more
doaj +1 more source
Low-Cost BDS Reflectometry for Real-Time Water Surface Retrieval
Remote Sensing, 2023 The official launch of the Chinese BeiDou Navigation Satellite System with global coverage (BDS-3) presents significant opportunities for various applications, including precision agriculture and autonomous driving, among others.
Ken Deng +4 more
doaj +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.Abstract Numerical wave models are widely used for wave forecasting and hindcast data set construction; however, their outputs frequently exhibit systematic biases stemming from uncertainties in wind forcing, physical parameterizations, and bathymetry. To address this issue, a deep learning–based bias correction approach is applied to significant wave ...
Jiageng Han +6 more
wiley +1 more source
Real-time Reconstruction of Surface Velocities from Satellite Observations in the Alboran Sea
Remote Sensing, 2020 Surface currents in the Alboran Sea are characterized by a very fast evolution that is not well captured by altimetric maps due to sampling limitations. On the contrary, satellite infrared measurements provide high resolution synoptic images of the ocean
Jordi Isern-Fontanet +6 more
doaj +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.Abstract Classical satellite altimetry has limited sensitivity to seafloor topography at wavelengths shorter than about 150 km, leaving short‐wavelength structure poorly constrained away from ship tracks. The Surface Water and Ocean Topography (SWOT) mission improves gravity recovery at these scales.
Ruichen Zhou +7 more
wiley +1 more source
Alluvial ridge morphology on avulsing rivers
Sedimentology, Volume 73, Issue 6, Page 2311-2337, October 2026.ABSTRACT Alluvial ridges are built by preferential channel‐belt deposition and control river avulsions, yet a systematic analysis of their morphology has been missing. To address this gap, we analyse a globally distributed dataset of 8970 alluvial ridge flanks on 14 different rivers.
James H. Gearon, Douglas A. Edmonds
wiley +1 more source
Altimetry-derived surface water data assimilation over the Nile Basin
, 2020 Global hydrological models facilitate studying of water resources and their variations over time. The accuracies of these models are enhanced when combined with ever-increasing satellite remotely sensed data.
Joseph Awange (14964327) +1 more
core
SWOT Observations Reveal Basin‐Scale Reservoir Operating Patterns
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract The construction and operation of reservoirs have fundamentally modified the natural hydrograph globally. However, complex seasonal operating patterns remain opaque due to data scarcity, limiting the accuracy of hydrological modeling and water management.
Tan Chen +6 more
wiley +1 more source