Results 21 to 30 of about 1,885,669 (194)
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 This article presents an analysis of P-band radio signal propagation through forest based on 3D Numerical Method of Maxwell's equations (NMM3D). The simulation domain of the forested region covers an area of 35.8 × 35.8 m2 that includes 112&
Jongwoo Jeong +4 more
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Frontiers in Earth Science, 2022 Increasing the frequency range of physics-based predictions of earthquake ground motions requires to account for small-scale heterogeneities, which can only be described in a stochastic way.
Malcon Celorio +4 more
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Hybrid Method for Full-Wave Simulations of Forests at L-Band
IEEE Access, 2022 The full-wave simulations of 3D Maxwell equations of forests at L-band are carried out with a two-step hybrid method. The tallest trees considered include one 8-meter tall trunk, 18 primary branches and 108 secondary branches.
Weihui Gu +3 more
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Improvement of Image Classification by Multiple Optical Scattering
IEEE Photonics Journal, 2021 Multiple optical scattering occurs when light propagates in a non-uniform medium. During the multiple scattering, images were distorted and the spatial information they carried became scrambled.
Xinyu Gao +9 more
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Stochastic finite elements: Where is the physics? [PDF]
Theoretical and Applied Mechanics, 2011 The micromechanics based on the Hill-Mandel condition indicates that the majority of stochastic finite element methods hinge on random field (RF) models of material properties (such as Hooke’s law) having no physical content, or even at odds with ...
Ostoja-Starzewski Martin
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Effective multipoles in random media [PDF]
Communications in Partial Differential Equations, 2020 60 ...
Bella, P., Giunti, A., Otto, F.
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Wave propagation in random media: beyond Gaussian statistics [PDF]
ESAIM: Proceedings and Surveys, 2023 In this paper we review some aspects of wave propagation in random media. In the physics literature the picture seems simple: for large propagation distances, the wavefield has Gaussian statistics, mean zero, and second-order moments determined by ...
Garnier Josselin
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The behavior of partially coherent twisted space-time beams in atmospheric turbulence
Frontiers in Physics, 2023 We study how atmospheric turbulence affects twisted space-time beams, which are non-stationary random optical fields whose space and time dimensions are coupled with a stochastic twist.
Milo W. Hyde IV
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Noninvasive Imaging Through Random Media [PDF]
SIAM Journal on Applied Mathematics, 2018 When waves propagate through a strongly scattering medium the energy is transferred to the incoherent wave part by scattering. The wave intensity then forms a random speckle pattern seemingly without much useful information. However, a number of recent physical experiments show how one can extract useful information from this speckle pattern.
Garnier, Josselin, Solna, Knut
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Effective waves for random three-dimensional particulate materials
New Journal of Physics, 2021 How do you take a reliable measurement of a material whose microstructure is random? When using wave scattering, the answer is often to take an ensemble average (average over time or space).
Artur L Gower, Gerhard Kristensson
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