Results 41 to 50 of about 1,620,298 (334)

Fusion of polarimetric channel information of PALSAR data for land cover classification

Geomatics, Natural Hazards & Risk, 2014
Fully polarimetric radars are capable of preserving detailed information about the targets because of the amplitude and phase information they contain which helps in distinguishing different scattering mechanisms.
Gunjan Mittal, Pooja Mishra, Dharmendra Singh   +2 more
doaj   +1 more source

A Wideband Quad-Polarization Reconfigurable Metasurface Antenna

IEEE Access, 2018
A low-profile wideband metasurface antenna with quad-polarization reconfiguration ability is presented in this paper. The proposed metasurface antenna is composed of a square patch, a metasurface formed by a lattice of 4 × 4 periodic metal plates,
Jun Hu, Guo Qing Luo, Zhang-Cheng Hao
doaj   +1 more source

Tunable square waveguide polarizer with irises and posts

Технічна інженерія, 2020
Polarization signal processing is widely used in modern information and telecommunication systems for various purposes. Signal polarization processing is carried out in polarization-adaptive antenna systems.
А.V. Bulashenko, S.І. Piltyay, Y.I. Kalinichenko, O.V. Bulashenko   +3 more
doaj   +1 more source

Circular Polarization in Pulsar Integrated Profiles: Updates

, 2006
We update the systematic studies of circular polarization in integrated pulse profiles by Han et al (1998). Data of circular polarization profiles are compiled.
Biggs J D, Crawford F, Gil J A, Gould D M, Hamilton P A, Han J L, Jin-lin Han, Kramer M, Kramer M, Lommen A N, Lyne A G, Macquart J P, Manchester R N, Manchester R N, McCulloch P M, Melrose D, Navarro J, Petrova S A, Qiao G J, Qiao G J, Radhakrishnan V, Roberts M S E, Stairs I H, van Ommen T D, von Hoensbroech A, von Hoensbroech A, Weisberg J M, Weisberg J M, Xiao-Peng You, Xilouris K M, Xu R X   +30 more
core   +1 more source

Linear and Circular polarization in ultra-relativistic synchrotron sources - implications to GRB afterglows [PDF]

, 2015
Polarization measurements from relativistic outflows are a valuable tool to probe the geometry of the emission region and the microphysics of the particle distribution. Indeed, the polarization level depends on: (i) the local magnetic field orientation, (
Nakar, Ehud, Nava, Lara, Piran, Tsvi
core   +2 more sources

Multiple scattering of polarized radiation by non-spherical grains: first results [PDF]

, 2002
We present the first numerical radiative transfer simulation of multiple light scattering in dust configurations containing aligned non-spherical (spheroidal) dust grains.
Asselin, Bastien, Chrysostomou, Chrysostomou, Clark, Daniel, Dollfus, Elvius, Fischer, Gledhill, Gledhill, Gledhill, Gledhill, Henning, Johnson, Kim, Martin, N. V. Voshchinnikov, Notni, Onaka, S. Wolf, Scarrott, Th. Henning, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Voshchinnikov, Wolf, Wolf, Wolf, Wood   +31 more
core   +2 more sources

Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements

Light: Science & Applications, 2019
The manipulation and characterization of light polarization states are essential for many applications in quantum communication and computing, spectroscopy, bioinspired navigation, and imaging.
A. Basiri, Xiahui Chen, Jing Bai, P. Amrollahi, J. Carpenter, Z. Holman, Chao Wang, Yu Yao   +7 more
semanticscholar   +1 more source

Circular RNA Cdyl promotes abdominal aortic aneurysm formation by inducing M1 macrophage polarization and M1-type inflammation

Molecular Therapy, 2021
Macrophage polarization plays a crucial role in regulating abdominal aortic aneurysm (AAA) formation. Circular RNAs (circRNAs) are important regulators of macrophage polarization during the development of cardiovascular diseases.
Haoyu Song, Yang Yang, Yili Sun, Guoquan Wei, Hao Zheng, Yijin Chen, Donghua Cai, Chuling Li, Yusheng Ma, Zhongqiu Lin, Xingfeng Shi, W. Liao, Y. Liao, Lintao Zhong, J. Bin   +14 more
semanticscholar   +1 more source

Enhanced THz Circular-Polarization Detection in Miniaturized Chips with Chiral Antennas

Photonics
Recent advancements in terahertz (THz) wave technology have highlighted the criticality of circular-polarization detection, fostering the development of more compact, efficient on-chip THz circular-polarization detectors.
Fangzhe Li, Jing Zhou, Jie Deng, Jinyong Shen, Tianyun Zhu, Wenji Jing, Xu Dai, Jiexian Ye, Yujie Zhang, Junwei Huang, Xiaoshuang Chen   +10 more
doaj   +1 more source

Conversion from linear to circular polarization in FPGA

, 2010
Context: Radio astronomical receivers are now expanding their frequency range to cover large (octave) fractional bandwidths for sensitivity and spectral flexibility, which makes the design of good analogue circular polarizers challenging.
Das, Koyel, Keller, R., Roy, A. L., Tuccari, G.   +3 more
core   +1 more source