Results 51 to 60 of about 3,144 (202)

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

open access: yesEarth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones   +21 more
wiley   +1 more source

On the Interpretation of L- and P-Band PolSAR Signatures of Polythermal Glaciers [PDF]

open access: yes, 2013
Long-wavelength (e.g. P- and L- band) SAR systems can penetrate tens of meters deep into ice bodies. Hence, they are sensitive to the ice surface as well as to sub-surface (volume) ice structures.
Hajnsek, Irena   +2 more
core  

Interlinked Dynamics of Rice Cultivation Intensity and Ground Subsidence: Spatio‐Temporal Insights Into Water Resource Implications From Multi‐Year Spaceborne SAR Analysis

open access: yesWater Resources Research, Volume 62, Issue 4, April 2026.
Abstract Sustainable rice cultivation is vital to meet global food demands, particularly in regions relying on groundwater for irrigation. Over‐pumping, however, can cause significant ground subsidence, threatening both infrastructure and agricultural sustainability.
Ya‐Lun S. Tsai, Xun‐Yan Liu
wiley   +1 more source

Discussion on Application of Polarimetric Synthetic Aperture Radar in Marine Surveillance

open access: yesLeida xuebao, 2016
Synthetic Aperture Radar (SAR), an important earth observation sensor, has been used in a wide range of applications for land and marine surveillance. Polarimetric SAR (PolSAR) can obtain abundant scattering information of a target to improve the ability
Zhang Jie   +3 more
doaj   +1 more source

A Box Gradient‐Based Anisotropic Diffusion Framework for Polarimetric SAR Despeckling

open access: yesElectronics Letters, Volume 62, Issue 1, January/December 2026.
This paper proposes a novel anisotropic diffusion framework for PolSAR despeckling, driven by a newly defined complex‐domain Box gradient. The method adaptively suppresses speckle while preserving structural and point‐target details, and experiments on real AIRSAR data confirm superior performance over existing filters.
Songli Han, Dawei Ren, Jian Yang
wiley   +1 more source

Modelling PolSAR Scattering Signatures at Long Wavelengths of Glacier Ice Volumes [PDF]

open access: yes, 2012
The crucial role of cryosphere for understanding the global climate change has been widely recognized in recent decades [1]. Glaciers and ice sheets are the main components of the cryosphere and constitute the basic reservoir of fresh water for high ...
Jagdhuber, Thomas   +4 more
core  

Merits of Complex-Valued Neural Networks for PolSAR image segmentation

open access: yes, 2022
International audienceDans cet article, nous mettons en oeuvre deux réseaux de neurones, l'un à valeurs complexes et l'autre à valeurs réelles, de dimensions équivalentes, pour la segmentation d'images Polarimetric Synthetic Aperture Radar (PolSAR).
Ovarlez, Jean-Phillipe   +4 more
core   +2 more sources

Unsupervised PolSAR Change Detection Based on Polarimetric Distance Measurements and ConvLSTM Network

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Time-series PolSAR are capable for continuous change monitoring of natural resources and urban land-covers regardless of weather and lighting conditions.
Rong Gui   +4 more
doaj   +1 more source

Exploring Polarimetric Properties Preservation for PolSAR Image Reconstruction With Complex‐Valued Convolutional Neural Networks

open access: yesIET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
Polarimetric SAR data's inherent complex‐valued nature demands algorithms that work directly with complex representations, yet most deep‐learning approaches sidestep this by converting to the real domain. We implement and evaluate complex‐valued convolutional autoencoders that compress and accurately reconstruct full‐polarimetric SAR signals—preserving
Quentin Gabot   +4 more
wiley   +1 more source

The Use of Non Local Filters in Polsar Applications

open access: yes, 2019
In this study, the capability of polarimetric Non Local Filters (NLFs) for speckle reduction in POLarimetric Synthetic Aperture Radar (POLSAR) measurements is investigated.
Buono A.   +5 more
core   +1 more source

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