Results 61 to 70 of about 7,886 (195)

Effect of speckle on APSCI method and Mueller Imaging [PDF]

open access: yes, 2011
7 pagesInternational audienceThe principle of the polarimetric imaging method called APSCI (Adapted Polarization State Contrast Imaging) is to maximize the polarimetric contrast between an object and its background using specific polarization states of ...
de Martino, Antonello   +4 more
core   +3 more sources

Skyrmionic Polarization Textures in Structured Dielectric Planar Media

open access: yesNanophotonics, Volume 15, Issue 3, 12 February 2026.
Topological skyrmionic textures are typically associated with the structure of optical fields. This work demonstrates that they can also emerge from the optical response of structured metasurfaces. Through engineered light–matter interaction, polarization eigenstates acquire nontrivial topology, which can be mapped into the Chern‐insulator physics ...
Francesco Di Colandrea   +2 more
wiley   +1 more source

Ship Discrimination Using Polarimetric SAR Data and Coherent Time-Frequency Analysis

open access: yesRemote Sensing, 2013
This paper presents a new approach for the discrimination of ship responses using polarimetric SAR (PolSAR) data. The PolSAR multidimensional information is analyzed using a linear Time-Frequency (TF) decomposition approach, which permits to describe the
Canbin Hu   +2 more
doaj   +1 more source

Polarimetric Synthetic Aperture Radar Interpretation and Recognition: Advances and Perspectives

open access: yesLeida xuebao, 2020
Polarimetric Synthetic Aperture Radar (SAR), which can acquire fully polarimetric information, is widely used in civilian and military fields, such as earth observation, damage assessment, and reconnaissance.
WANG Xuesong, CHEN Siwei
doaj   +1 more source

Synergy of multi-temporal polarimetric SAR and optical image satellite for mapping of marsh vegetation using object-based random forest algorithm

open access: yesEcological Indicators, 2021
The accurate classification of marsh vegetation is an important prerequisite for wetland management and protection. In this study, the Honghe National Nature Reserve was used as the research area.
Bolin Fu   +8 more
doaj   +1 more source

Compressive Sensing for Spectroscopy and Polarimetry

open access: yes, 2009
We demonstrate through numerical simulations with real data the feasibility of using compressive sensing techniques for the acquisition of spectro-polarimetric data.
Ariste, A. Lopez, Ramos, A. Asensio
core   +1 more source

Techniques and Advances in Ultrafast Photography

open access: yesAdvanced Photonics Research, Volume 6, Issue 12, December 2025.
This review maps the fast‐growing field of ultrafast photography from early mechanical cameras to modern optical‐computational methods. It organizes techniques into four families (multishot passive/active; single‐shot passive/active), explains how they reach trillion‐frame‐per‐second speeds, compares capabilities and tradeoffs, and highlights ...
Chen Huang   +10 more
wiley   +1 more source

PolInSAR Coherence and Entropy‐Based Hybrid Decomposition Model

open access: yesEarth and Space Science, 2020
Target characterization is an essential aspect of polarimetric decomposition. This technique is capable of categorizing polarimetric signatures for different types of targets based on the scattering mechanisms they follow, enabling straightforward ...
Shahid Shuja Shafai, Shashi Kumar
doaj   +1 more source

An Accelerated Discrete Ordinate Method (ADOM) Developed for Scalar Radiative Transfer by Merging Adjacent Clear‐Sky Atmospheric Layers: Forward and Jacobians Derivation

open access: yesJournal of Advances in Modeling Earth Systems, Volume 17, Issue 12, December 2025.
Abstract In this study, an Accelerated Discrete Ordinate Method (ADOM) is proposed to enhance the computational efficiency of multi‐layer radiative transfer (RT) simulations while maintaining a high accuracy. ADOM applies the Discrete Ordinate Method (DOM) only in scattering layers, while the radiances for the adjacent clear‐sky layers are merged and ...
Yi‐Ning Shi, Fuzhong Weng
wiley   +1 more source

Reconstruction of the equilibrium of the plasma in a Tokamak and identification of the current density profile in real time [PDF]

open access: yes, 2011
The reconstruction of the equilibrium of a plasma in a Tokamak is a free boundary problem described by the Grad-Shafranov equation in axisymmetric configuration.
Blum, Jacques   +2 more
core   +4 more sources

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