Results 21 to 30 of about 297,256 (273)

Planar microwave retroreflector based on transmissive gradient index metasurface

open access: yesNew Journal of Physics, 2020
In this paper, a novel planar microwave retroreflector based on a transmissive gradient metasurface combined with a curved metal mirror is proposed and demonstrated.
Yong-Qiang Liu   +4 more
doaj   +1 more source

Numerical Simulation of Single Droplet Impingement upon Dynamic Liquid Film Obliquely

open access: yesMathematics, 2022
To better understand the application of droplet impingement in industry and agriculture, in this paper, the coupled level set and volume of fluid (CLSVOF) method is applied to study droplet oblique impact on a dynamic liquid film. The conclusions are the
Shanshan Yang   +4 more
doaj   +1 more source

Highly Robust Synthetic Aperture Radar Target Recognition Method Based on Simulation Data Training

open access: yesInternational Journal of Antennas and Propagation, 2022
Sufficient synthetic aperture radar (SAR) data is the key element in achieving excellent target recognition performance for most deep learning algorithms.
Liping Hu   +4 more
doaj   +1 more source

Field discrete Monte Carlo simulation of electromagnetic scattering characteristics of plasma sheath

open access: yesAIP Advances, 2020
The electromagnetic scattering of an ultra-high-speed plasma covered target is simulated by the field discrete Monte Carlo method. The flow field network is used to simulate the trajectory of electromagnetic wave particles according to the ...
Jieshu Jia   +5 more
doaj   +1 more source

A Fast Algorithm for Establishing 3-D Scattering Center Model for Ship Targets over Sea Surface Using the Shooting and Bouncing Ray Technique

open access: yesLeida xuebao, 2019
Fast construction of the 3-D scattering centers of ship targets on the sea surface is important for many radar applications, including the fast signature prediction, feature extraction, and automatic recognition of targets.
YAN Hua   +5 more
doaj   +1 more source

Surface plasmon dispersion and modes on the graphene metasurface with periodical ribbon arrays

open access: yesMaterials Research Express, 2020
Graphene plasmonics on the structured metasurface demonstrate many exotic properties which can combine novel nanomaterials and well-established plasmonics, providing unique opportunities to develop a series of novel photonic, plasmonic and optoelectronic
Yong-Qiang Liu   +2 more
doaj   +1 more source

Scaled Sea Surface Design and RCS Measurement Based on Rough Film Medium

open access: yesSensors, 2022
The electromagnetic (EM) scattering characteristics of the rough sea surface is very important for target surveying and detection in a sea environment. This work proposes a scaled sea surface designing method based on a rough thin-film medium.
Chenyu Guo   +4 more
doaj   +1 more source

Radiative Transfer in a Discrete Random Medium Adjacent to a Half-Space with a Rough Interface [PDF]

open access: yes, 2018
For a macroscopically plane-parallel discrete random medium, the boundary conditions for the specific coherency dyadic at a rough interface are derived.
Doicu, Adrian, Mishchenko, Michael I.
core   +2 more sources

Electromagnetic Scattering from Absorbing Spheres [PDF]

open access: yesApplied Optics, 1967
A very efficient method for the calculation of Mie cross sections for absorbing particles is discussed. It is used to calculate an extensive set of curves which illustrate the dependence of the efficiency factors Q for absorption and scattering on the size parameter x and on n(2) and n(2) (the real and imaginary parts of the index of refraction).
G W, Kattawar, G N, Plass
openaire   +2 more sources

Terahertz Radar Cross Section Measurements Based on Millimeter-wave Converter

open access: yesLeida xuebao, 2018
The measurement system has been built with Stepped Frequency Continuous Wave (SFCW) signal for Radar Cross Section (RCS) measurements in free-space at 220~330 GHz.
Wu Yang   +3 more
doaj   +1 more source

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