Results 71 to 80 of about 575 (166)

Pyramid Fine and Coarse Attentions for Land Cover Classification from Compact Polarimetric SAR Imagery

Remote Sensing
Land cover classification from compact polarimetry (CP) imagery captured by the launched RADARSAT Constellation Mission (RCM) is important but challenging due to class signature ambiguity issues and speckle noise.
Saeid Taleghanidoozdoozan, Linlin Xu, David A. Clausi   +2 more
doaj   +1 more source

Compact circular polarization detector with Z-shaped thermoelectric nanoantenna for infrared (IR) polarimetry

Materials Today Advances
The capability of infrared (IR) polarimetric imaging to enhance object detection by capturing the polarization states of emitted waves has been significantly advanced, particularly in remote sensing and biomedical imaging.
Yudhistira Yudhistira, Sangjo Choi
doaj   +1 more source

A Compact Polarimetric CTLR Mode Calibration Method Immune to Faraday Rotation Using Two Dihedral Reflectors

Remote Sensing
This paper proposes a compact polarimetric CTLR mode calibration method using only two dihedral reflectors. The method leverages the property that the dihedral scattering matrix is unaffected by double-pass Faraday rotation, effectively eliminating the ...
Siqi Liu, Jili Sun, Xiuqing Liu
doaj   +1 more source

X-Ray Polarization from the Gamma-Ray Binary LS I +61° 303

The Astrophysical Journal
The gamma-ray-emitting binary stellar system LS I +61° 303 was observed with the Imaging X-ray Polarimetry Explorer on two successive orbits over orbital phases of 0.74–1.05.
Philip Kaaret, Sudip Chakraborty, Daniel Golonka, Oliver J. Roberts, Ioannis Liodakis, Andrea Gnarini, Steven R. Ehlert, Joel B. Coley   +7 more
doaj   +1 more source

X-Ray Polarimetry in the Low-statistics Regime Using the Bayesian Approach Reveals Polarization Angle Variations

The Astrophysical Journal
X-ray polarimetry of the accreting compact object has revealed fast time variations in the polarization angle (PA), suggesting that the geometry and/or optical depth of the Comptonization region is changing rapidly.
Hong Li, Qing-Chang Zhao, Hua Feng, Lian Tao, Sergey S. Tsygankov   +4 more
doaj   +1 more source

Spin Tetrad Formalism of Circular Polarization States in Relativistic Jets

Universe
Relativistic jets from active galactic nuclei (AGN) have been a topic of peak interest in the high-energy astrophysics community for their uniquely dynamic nature and incredible radiative power emanating from supermassive black holes and similarly ...
Ronald Gamble
doaj   +1 more source

Kerr Polarization Transport: Accuracy and Performance in General Relativistic Light Propagation

The Astrophysical Journal
We present a compact and reproducible method for general-relativistic polarization transport in the Kerr metric that achieves median electric-vector position-angle residuals of 〈ΔPA〉 ≈ 0 $\mathop{.}\limits^{\unicode{x000b0}}$ 09, a 95th percentile of 0 $\
Shakibul Chowdhury
doaj   +1 more source

The RADARSAT Constellation Mission for Soil Moisture Retrieval of Bare Soil by Compact Polarimetry and Random Forest Regression: La Mission de la Constellation RADARSAT pour l’estimation de la teneur en eau de sols nus par polarimétrie compacte et de la régression Random Forest

Canadian Journal of Remote Sensing
The RADARSAT Constellation Mission (RCM) performance evaluation is currently in progress for core Synthetic Aperture Radar (SAR) applications. This study aims to investigate the retrieval of Soil Moisture Content (SMC) in bare soil with RCM compact ...
Mohammed Dabboor, Oliver Junye Xu, Maria Vakalopoulou, Stéphane Bélair, Jarrett Powers, Marco Carrera, Leqiang Sun   +6 more
doaj   +1 more source

Neural network assisted high-spatial-resolution polarimetry with non-interleaved chiral metasurfaces. [PDF]

Light Sci Appl, 2023
Chen C, Xiao X, Ye X, Sun J, Ji J, Yu R, Song W, Zhu S, Li T.   +8 more
europepmc   +1 more source

Imaging polarimetry of the blue compact galaxy NGC 3125 [PDF]

Monthly Notices of the Royal Astronomical Society, 1994
Alton, P. B., Draper, P. W., Gledhill, T. M., Stockdale, D. P., Scarrott, S. M., Wolstencroft, R. D.   +5 more
openaire   +2 more sources