4-Bit Optimized Coding Metasurface for Wideband RCS Reduction
IEEE Access, 2019 In this paper, a 4-bit reflective coding metasurface with the polarization-insensitive unit cell is designed for wideband radar cross section (RCS) reduction.
Yasir Saifullah +4 more
doaj +1 more source
Backscatter of Electromagnetic Waves from a Rough Layer [PDF]
, 1966 Backscatter of electromagnetic waves from rough ...
Durrani, S. H. +2 more
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Characterization of Gas Absorption Modules Based on Flexible Mid-Infrared Hollow Waveguides
Sensors, 2019 A new gas absorption module, the substrate-embedded hollow waveguide (eHWG) model, is proposed. It consists of a substrate with a curved channel and a hollow waveguide. The hollow waveguide is curved into the channel and works as a gas absorption cell as
Kewang Chen +5 more
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Electromagnetic waves destabilized by runaway electrons in near-critical electric fields [PDF]
, 2013 Runaway electron distributions are strongly anisotropic in velocity space. This anisotropy is a source of free energy that may destabilize electromagnetic waves through a resonant interaction between the waves and the energetic electrons. In this work we
Fülöp, T., Kómár, A., Pokol, G. I.
core +2 more sources
Search For Gravitational Waves Through the Electromagnetic Faraday Rotation [PDF]
, 2006 A method is given which renders indirect detection of strong gravitational waves possible. This is based on the reflection (collision) of a linearly polarized electromagnetic shock wave from (with) a cross polarized impulsive and shock gravitational ...
C. Barrabes +3 more
core +2 more sources
Negative group velocity and three-wave mixing in dielectric crystals
, 2011 Extraordinary features of optical parametric amplification of Stokes electromagnetic waves are investigated, which originate from three-wave mixing of two ordinary electromagnetic and one backward phonon wave with negative group velocity.
Myslivets, Sergey A. +3 more
core +1 more source
Resonant interaction between gravitational waves, electromagnetic waves and plasma flows
, 2003 In magnetized plasmas gravitational and electromagnetic waves may interact coherently and exchange energy between themselves and with plasma flows.
A. Greco +20 more
core +1 more source
Ship Detection in Complex Environment Using SAR Time Series
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Ship detection in complex environment is a challenging task due to strong background inferences, for which various deep-learning-based methods have been proposed.
Shakila Kahar, Fengming Hu, Feng Xu
doaj +1 more source
Multilayer nonlinear diffraction neural networks with programmable and fast ReLU activation function
Nature CommunicationsOptical diffractive neural networks are emerging for improving speed and energy efficiency in machine learning. However, the challenges of nonlinear activation functions (e.g., latency issues, high power consumption, and cascading complexity) impede ...
Yu Ming Ning +9 more
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A Portable Penetrating Radar System for 3D Wall Attribution Inversion
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThe wall-penetrating radar is a noncontact sensing technology that uses electromagnetic waves to penetrate buildings and detect concealed structures. The current two-dimensional (2-D) detection systems have difficulty in identifying wall materials.
Su Zhang +7 more
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