Results 21 to 30 of about 648,996 (229)

The first polarimetric GNSS-Reflectometer instrument in space improves the SMAP mission’s sensitivity over densely vegetated areas

open access: yesScientific Reports, 2023
The Soil Moisture Active Passive (SMAP) mission has dramatically benefited our knowledge of the Earth’s surface processes. The SMAP mission was initially designed to provide complementary L-band measurements from a radiometer and a radar, producing ...
Nereida Rodriguez-Alvarez   +5 more
doaj   +1 more source

Polarimetric Synthetic Aperture Radar

open access: yes, 2021
This open access book focuses on the practical application of electromagnetic polarimetry principles in Earth remote sensing with an educational purpose. In the last decade, the operations from fully polarimetric synthetic aperture radar such as the Japanese ALOS/PalSAR, the Canadian Radarsat-2 and the German TerraSAR-X and their easy data access for
Hajnsek, Irena, Desnos, Yves-Louis
openaire   +3 more sources

Simulation and Analysis of the Fully Polarimetric Scattering Characteristics of Aircraft in UHF Band

open access: yesLeida xuebao, 2016
This study is based on the application requirements of fully polarimetric radar for aircraft detection and target recognition. We focus on fully polarimetric scattering characteristics of air targets, particularly the cross-polarimetric scattering ...
Lu Dongwei   +3 more
doaj   +1 more source

Airborne polarimetric Doppler weather radar: trade-offs between various engineering specifications [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2018
NCAR EOL is investigating potential configurations for the next-generation airborne phased array radar (APAR) that is capable of retrieving dynamic and microphysical characteristics of clouds and precipitation. The APAR will operate at C band.
J. Vivekanandan, E. Loew
doaj   +1 more source

Polarimetric radar studies of atmospheric ice particles [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 1994
Single scattering properties of ice crystals are described at microwave frequencies using discrete dipole approximations and Rayleigh scattering techniques. For a given shape, the average bulk densities of ice crystals can be estimated using the ratio of the copolarized radar signal in a linear (horizontal, vertical) polarization basis.
Jothiram Vivekanandan   +3 more
openaire   +3 more sources

Performance of high-resolution X-band radar for rainfall measurement in The Netherlands [PDF]

open access: yes, 2010
This study presents an analysis of 195 rainfall events gathered with the X-band weather radar SOLIDAR and a tipping bucket rain gauge network near Delft, The Netherlands, between May 1993 and April 1994.
J. N. M. Stricker   +14 more
core   +2 more sources

Improved Threat Detection in Walk-Through Security Scanning Using an Optimized Polarimetric Target Decomposition Method

open access: yesIEEE Journal of Microwaves, 2023
Reliable and convenient walk-through security scanning, which doesn't separate people or impede their movement, is an extremely challenging task. In this paper, a novel approach for a security check with an overhead observation and a polarimetric ...
Konstantin Root   +4 more
doaj   +1 more source

Ship and Oil-Spill Detection Using the Degree of Polarization in Linear and Hybrid/Compact Dual-Pol SAR [PDF]

open access: yes, 2012
Monitoring and detection of ships and oil spills using synthetic aperture radar (SAR) have received a considerable attention over the past few years, notably due to the wide area coverage and day and night all-weather capabilities of SAR systems.
Shirvany, Reza   +2 more
core   +1 more source

A New Polarimetric Change Detector in Radar Imagery [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2013
In modern society, the anthropogenic influences on ecosystems are central points to understand the evolution of our planet. A polarimetric synthetic aperture radar may have a significant contribution in tackling problems concerning land use change, since such data are available with any-weather conditions.
Armando Marino   +2 more
openaire   +3 more sources

A Data-Adaptive Compressed Sensing Approach to Polarimetric SAR Tomography of Forested Areas [PDF]

open access: yes, 2013
Super-resolution imaging via compressed sensing (CS)-based spectral estimators has been recently introduced to synthetic aperture radar (SAR) tomography.
Nannini, Matteo   +2 more
core   +1 more source

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