Results 111 to 120 of about 651,747 (306)

Al3+/Ta5+ Co‐Doping Promotes Homogeneous Li+ Transport Enabling High Performance Ni‐Rich Layered Oxide Cathodes

open access: yesAdvanced Functional Materials, EarlyView.
Al3+/Ta5+ co‐doping refines the primary particles of LiNiO2, reduces Li/Ni antisite disorder, and expands the c‐axis lattice parameter, thereby enabling faster and more homogeneous Li+ transport. Such rapid and homogeneous Li+ transport suppresses high‐voltage phase transitions and microcrack formation, ultimately improving the rate capability and long‐
Yanhao Ren   +11 more
wiley   +1 more source

The Radiometric Measurement Quantity for SAR Images [PDF]

open access: yes, 2013
A Synthetic Aperture Radar (SAR) system measures among other quantities the terrain radar reflectivity. After image calibration, the pixel intensities are commonly expressed in terms of radar cross sections (for point targets) or as backscatter ...
Döring, Björn, Schwerdt, Marco
core   +1 more source

Simulation of subsurface imaging for remote sensing and buried object detection from airborne platforms

open access: yesEuropean Journal of Remote Sensing, 2019
This paper addresses the problem of efficient simulations of the signal backscattered from buried structures. The proposed modelling of subsurface soil structure is based on a geologically – and hydrologically-motivated approach by using of real ...
R Kedzierawski   +2 more
doaj   +1 more source

Use of SAR and Optical Time Series for Tropical Forest Disturbance Mapping

open access: yesRemote Sensing, 2020
Frequent cloud cover and fast regrowth often hamper topical forest disturbance monitoring with optical data. This study aims at overcoming these limitations by combining dense time series of optical (Sentinel-2 and Landsat 8) and SAR data (Sentinel-1 ...
Manuela Hirschmugl   +5 more
doaj   +1 more source

Geodetic SAR Tomography

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2016
In this paper, we propose a framework referred to as “geodetic synthetic aperture radar (SAR) tomography” that fuses the SAR imaging geodesy and tomographic SAR inversion (TomoSAR) approaches to obtain absolute 3-D positions of a large amount of natural scatterers.
Xiaoxiang Zhu 0001   +4 more
openaire   +4 more sources

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

open access: yesAdvanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen   +7 more
wiley   +1 more source

Deep Transfer Learning for Few-Shot SAR Image Classification

open access: yesRemote Sensing, 2019
The reemergence of Deep Neural Networks (DNNs) has lead to high-performance supervised learning algorithms for the Electro-Optical (EO) domain classification and detection problems.
Mohammad Rostami   +3 more
semanticscholar   +1 more source

Engineering the Assembly Freedom of Donor–Acceptor Type Self‐Assembled Monolayers Toward Efficient and Stable Flexible Perovskite Photovoltaics

open access: yesAdvanced Materials, EarlyView.
Assembly freedom engineering breaks the vertical alignment constraint of donor–acceptor self‐assembled monolayers, tuning their assembly freedom to achieve quasi‐random molecular orientation. This strategy simultaneously boosts interfacial charge transport and mechanical robustness, enabling high‐efficiency and mechanically stable flexible perovskite ...
Biao Zhou   +9 more
wiley   +1 more source

CIRAD-SAR. Revue externe à mi-parcours

open access: yes, 1994
Documents disponibles : - Schéma pluriannuel de programmation, bilan et perspectives, - Démarche en partenariat du Cirad-Sar (Groupe de travail de la direction), - La gestion de la qualité (Direction scientifique), - Ressources humaines, - Tendances et ...
CIRAD-SAR - FRA
core  

Wavelet-Based Compressed Sensing for SAR Tomography of Forested Areas [PDF]

open access: yes, 2012
Synthetic aperture radar (SAR) tomography is a 3-D imaging modality that is commonly tackled by spectral estimation techniques. Thus, the backscattered power along the cross-range direction can be readily obtained by computing the Fourier spectrum of a ...
Nannini, Matteo   +2 more
core   +1 more source

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