Results 91 to 100 of about 55,884 (221)

Diagnostics for spectropolarimetry and magnetography [PDF]

, 2010
An assessment on the capabilities of modern spectropolarimeters and magnetographs is in order since most of our astrophysical results rely upon the accuracy of the instrumentation and on the sensitivity of the observables to variations of the sought ...
Cabrera Solana, Graham, Jose Carlos del Toro Iniesta, Landi Degl'Innocenti, Martínez Pillet, Ruiz Cobo, Title, Valentín Martínez Pillet   +7 more
core   +1 more source

Pupil Plane Multiplexing for Vectorial Fourier Ptychography

Laser &Photonics Reviews, Volume 20, Issue 9, 6 May 2026.
This study proposes a cost‐effective, modality‐adaptive multichannel microscopy framework using pupil‐plane multiplexing. A custom pupil aperture at the Fourier plane encodes channel‐specific transfer functions with spectral or polarization filters, and model‐based reconstruction with channel‐dependent priors decodes them.
Hyesuk Chae, Kyungwon Lee, Yong Guk Kang, Hansol Yoon, Kyung Chul Lee, Seung Ah Lee   +5 more
wiley   +1 more source

Assessment of the X- and C-Band Polarimetric SAR Data for Plastic-Mulched Farmland Classification

Remote Sensing, 2019
We present a classification of plastic-mulched farmland (PMF) and other land cover types using full polarimetric RADARSAT-2 data and dual polarimetric (HH, VV) TerraSAR-X data, acquired from a test site in Hebei, China, where the main land covers include
Chang-An Liu, Zhongxin Chen, Di Wang, Dandan Li   +3 more
doaj   +1 more source

Dual‐Polarization‐Sensitive Organic Photodetectors for Real‐Time Polarimetric Imaging

Laser &Photonics Reviews, Volume 20, Issue 9, 6 May 2026.
Bias‐switchable organic photodetectors with orthogonally stacked uniaxially oriented polymer layers enable dual‐polarization detection and real‐time polarimetric imaging. This scalable, template‐free strategy achieves a high dichroic ratio (>11), rapid response (>500 Hz), and detectivity up to 1013 Jones.
Jiayin Han, Wanzhu Cai, Yingying Xue, Qi Zhu, Mingsheng Gao, Yu Tang, Zhuangmiao Wang, Furong Zhu   +7 more
wiley   +1 more source

Statistical scene generation for polarimetric imaging systems

, 2017
Little publicly available data exists for polarimetric measurements. When designing task specific polarimetric systems, the statistical properties of the task specific data becomes important.
Alenin, Andrey S., Tyo, J. Scott, Vaughn, Israel J.   +2 more
core  

Preliminary design of the Visible Spectro-Polarimeter for the Advanced Technology Solar Telescope

, 2012
The Visible Spectro-Polarimeter (ViSP) is one of the first light instruments for the Advanced Technology Solar Telescope (ATST). It is an echelle spectrograph designed to measure three different regions of the solar spectrum in three separate focal ...
Casini, Roberto, de Wijn, Alfred G., Huang, Pei, Nelson, Peter G.   +3 more
core   +1 more source

Frontiers of Doppler Lidar: A Review on Its Global Applications

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
Doppler lidars provide high‐resolution wind measurements that support weather forecasting, wind energy optimization, and aviation safety. This review highlights their global applications, operational advantages, and growing role in atmospheric science and sustainable development. ABSTRACT Doppler lidar is a powerful remote sensing technology capable of
Sridhara Nayak, Isao Kanda
wiley   +1 more source

Improved Tropical Cyclone Wind Estimation Using Dual‐Polarization C‐Band SAR and Machine Learning

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Tropical cyclones (TCs) characterized by extreme wind speeds present severe hazards to human life and infrastructure. Spaceborne synthetic aperture radar (SAR) has emerged as a critical observational tool for TCs, owing to its all‐weather, high‐resolution imaging capabilities.
Chaogang Guo, Weihua Ai, Xianbin Zhao, Zhancai Liu, Hongwei Yang, Jiajia Tang   +5 more
wiley   +1 more source

On the estimate of magnetic non-potentiality of sunspots derived using Hinode SOT/SP observations: Effect of polarimetric noise

, 2010
The accuracy of Milne-Eddington (ME) inversions, used to retrieve the magnetic field vector, depends upon the signal-to-noise ratio (SNR) of the spectro-polarimetric observations.
Bao, Bellot Rubio, Gosain, Gosain, Hagino, Hagino, Harvey, Leka, Lites, Lites, P. Venkatakrishnan, Press, Sanjay Gosain, Sanjiv Kumar Tiwari, Scherrer, Su, Tiwari, Tiwari, Venkatakrishnan, Westendorp Plaza   +19 more
core   +1 more source

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

Earth 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, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source