Temat: electromagnetic scattering - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Features of light scattering by surface fractal structures
Autorzy:: Semchuk, O.
Grechko, L.
Vodopianov, D.
Kunitska, L.
Powiązania:: https://bibliotekanauki.pl/articles/1964137.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Gdańska
Tematy:: fractal
scattering
light
electromagnetic wave
scattering coefficient
rough surface
Opis:: The average coefficient of light scattering by surface fractal structures is calculated within the limits of the Kirchhoff method. A normalized band-limited Weierstrass function is presented for modeling 2D fractal rough surfaces. On the basis of the numerical calculation of the average scattering coefficient, scattering indicatrices diagrams are calculated for various surfaces and falling angles. An analysis of the diagrams leads to the following conclusions: the scattering is symmetric relatively to the plane of fall; the picture becomes complicated when the surface calibration degree is increased; the greatest intensity of a scattering wave is observed in the mirroring direction; there are other directions in which bursts of intensity are observed.
Źródło:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 3; 199-206
1428-6394
Pojawia się w:: TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Electromagnetic Scattering by a Cylinder in a Lossy Medium of an Inhomogeneous Elliptically Polarized Plane Wave
Autorzy:: Mangini, Fabio
Dinia, Lorenzo
Frezza, Fabrizio
Powiązania:: https://bibliotekanauki.pl/articles/309521.pdf
Data publikacji:: 2019
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: electromagnetic scattering
inhomogeneous wave dispersion
vectorial cylindrical-harmonics
Opis:: In this paper, a rigorous theoretical approach, adopted in order to generalize the Vectorial CylindricalHarmonics (VCH) expansion of an inhomogeneous elliptically polarized plane wave, is presented. An application of the VCH expansion to analyze electromagnetic ﬁeld scattered by an inﬁnite circular cylinder is presented. The results are obtained using the so-called complex-angle formalism reaching a superposition of Vectorial Cylindrical-Harmonics. To validate the method, a Matlab code was implemented. Also, the validity of the methodology was conﬁrmed through some comparisons between the proposed method and the numerical results obtained based on the Finite Element Method (FEM) in the canonical scenario with a single cylinder.
Źródło:: Journal of Telecommunications and Information Technology; 2019, 4; 36-42
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Advanced Inversion Techniques for Ground Penetrating Radar
Autorzy:: Fedeli, A.
Pastorino, M.
Randazzo, A.
Powiązania:: https://bibliotekanauki.pl/articles/308896.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: electromagnetic scattering
Ground Penetrating Radar
inverse problems
Opis:: Ground Penetrating Radar (GPR) systems arenowadays standard inspection tools in several application areas, such as subsurface prospecting, civil engineering and cultural heritage monitoring. Usually, the raw output of GPR isprovided as a B-scan, which has to be further processed inorder to extract the needed information about the inspectedscene. In this framework, inversescattering-based approachesare gaining an ever-increasing interest, thanks to their capabilities of directly providing images of the physical and dielectricproperties of the investigated areas. In this paper, some advances in the development of such inversion techniques in theGPR field are revised and discussed.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 3; 37-42
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Electromagnetic Scattering of Inhomogeneous Plane Wave by Ensemble of Cylinders
Autorzy:: Dinia, Lorenzo
Mangini, Fabio
Frezza, Fabrizio
Powiązania:: https://bibliotekanauki.pl/articles/309062.pdf
Data publikacji:: 2020
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: electromagnetic scattering
inhomogeneous wave dispersion
lossy media
multi-cylinders scattering
vectorial cylindrical-harmonics
Opis:: The interaction between an ensemble of cylinders and an inhomogeneous plane wave is introduced and is determined, in the present paper, through a rigorous theoretical approach. Scattered electromagnetic ﬁeld generated by an indeﬁnite number of inﬁnite circular cylinders is analyzed by the application of the generalized vector cylinder harmonics (VCH) expansion. The exact mathematical model relied upon to represent this scenario considers the so-called complex-angle formalism reaching a superposition of vectorial cylindrical-harmonics and Foldy-Lax Multiple scattering equations (FLMSE) to account for the multiscattering process between the cylinders. The method was validated by comparing the numerical results obtained with the use of the ﬁnite element method and a homemade Matlab code.
Źródło:: Journal of Telecommunications and Information Technology; 2020, 3; 86-92
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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