Results 51 to 60 of about 489,746 (209)

New insights into convection‐permitting model simulations from a ZDR$$ {\boldsymbol{Z}}_{\mathbf{DR}} $$ diagnostic for raindrops

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A polarimetric radar forward operator to simulate differential reflectivity (ZDR$$ {Z}_{\mathrm{DR}} $$) from rain was developed to evaluate simulated storms in the Met Office Unified Model (MetUM) for two case days of the Wessex Convection Experiment (WesCon) field campaign. Vertical columns of ZDR$$ {Z}_{\mathrm{DR}} $$, indicative of strong updrafts,
Chun Hay Brian Lo, Thorwald H. M. Stein, Christopher D. Westbrook, Paul R. Field, Kalli Furtado, Robert W. Scovell, Jonathan M. Wilkinson, Timothy Darlington, Humphrey W. Lean, Ryan R. Neely III, Christopher J. Walden   +10 more
wiley   +1 more source

Geometric, Radiometric, Polarimetric and Along-Track Interferometric Calibration of the new F-SAR System of DLR in X-Band [PDF]

, 2008
Since November 2006, DLR operates F-SAR - a new airborne SAR sensor beside its experimental airborne SAR sensor E-SAR. F-SAR is a totally new development utilizing most modern hardware.
Nottensteiner, Anton, Horn, Ralf, Reigber, Andreas, Baumgartner, Stefan, Scheiber, Rolf, Fischer, Jens   +5 more
core  

Soil moisture estimation using a multi-angular modified three component polarimetric decomposition [PDF]

, 2009
In this paper a modified three component polarimetric decomposition incorporating multi-angular acquisitions is developed to estimate soil moisture under vegetation cover over agricultural areas.
Konstantinos P. Papathanassiou, Jagdhuber, Thomas, Papathanassiou, Konstantinos P., Hajnsek, Irena, Bronstert, Axel, Papathanassiou, Konstantinos, Axel Bronstert, Thomas Jagdhuber, Irena Hajnsek   +8 more
core   +1 more source

Electromagnetic Scattering Modeling of Rough Surfaces and Selection of Chang’e-7 SAR Polarimetric Lunar Calibration Fields

Leida xuebao
Chang’e-7 will carry a fully polarimetric Synthetic Aperture Radar (SAR) to investigate the topography and material properties of the lunar polar regions, which necessitates reliable polarimetric calibration.
Jiale SONG, Niutao LIU, Yaqiu JIN, Pingping LU, Robert WANG   +4 more
doaj   +1 more source

Improved Cerrado Wetland Mapping Through Seasonal Moisture Metrics, Terrain Information and Semantic Segmentation

Remote Sensing in Ecology and Conservation, EarlyView.
Brazil's Cerrado valley wetlands—swamp savanna and gallery forest—are highly important for the biome's water cycle and carbon storage and are susceptible to degradation from the impacts of land use expansion and the climate crisis. In support of their detailed monitoring and assessment, we developed and tested a transferable mapping approach that ...
Felix Beer, Hugo do Nascimento Bendini, Mateus de Souza Miranda, Vu‐Dong Pham, Leila Maria Garcia Fonseca, Cássia Beatriz Rodrigues Munhoz, Sebastian van der Linden   +6 more
wiley   +1 more source

Design and Implementation of a Novel Polarimetric Active Radar Calibrator for Gaofen-3 SAR

Sensors, 2018
The Chinese first fully polarimetric space-borne synthetic aperture radar (SAR)-Gaofen-3 (GF-3) was launched in August 2016, which operates at the C-band and the resolution can reach 1 m.
Liang Li, Yongtao Zhu, Jun Hong, Feng Ming, Yu Wang   +4 more
doaj   +1 more source

General Five-Component Scattering Power Decomposition with Unitary Transformation (G5U) of Coherency Matrix

Remote Sensing, 2023
The polarimetric synthetic aperture radar (PolSAR) provides us with a two-by-two scattering matrix data set. The ensemble averaged coherency matrix in an imaging window derived using a scattering matrix has all non-zero elements in its three-by-three ...
Rashmi Malik, Gulab Singh, Onkar Dikshit, Yoshio Yamaguchi   +3 more
doaj   +1 more source

Skyless polarimetric calibration and visibility enhancement

Optics Express, 2009
Outdoor imaging in haze is plagued by poor visibility. A major problem is spatially-varying reduction of contrast by airlight, which is scattered by the haze particles towards the camera. However, images can be compensated for haze, and even yield a depth map of the scene. A key step in such scene recovery is subtraction of the airlight. In particular,
Einav, Namer, Sarit, Shwartz, Yoav Y, Schechner   +2 more
openaire   +2 more sources

Hyperspectral tomographic diffractive microscopy: Development and applications

Journal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori, Carlos Alberto Chacón Ávila, Matthieu Debailleul, Nicolas Verrier, Olivier Haeberlé   +4 more
wiley   +1 more source

Polarimetric Distortion Analysis of L- and S-Band Airborne SAR (LS-ASAR): A Precursor Study of the Spaceborne Dual-Frequency L- and S-Band NASA ISRO Synthetic Aperture Radar (NISAR) Mission

Engineering Proceedings, 2022
The polarimetric calibration (PolCal) is an essential process to ensure the minimization of distortions from airborne and spaceborne SAR data for scattering-based characterization of the targeted objects.
Shashi Kumar
doaj   +1 more source