Publication

FDTD Modeling of Lightning Electromagnetic Field Propagation Over Mountainous Terrain

Marcos Rubinstein, Dongshuai Li
2019
Conference Papers

Résumé

The Full-Wave Finite-Difference-Time-Domain (FDTD) electromagnetic (EM) simulation method can simulate large domains and produce time-marching solutions for arbitrary time-domain sources, making it ideal for many lightning applications. In this paper, a two-dimensional (2D) axial-symmetric and a three-dimensional (3D) FDTD model are developed that include irregular terrain based on real topographic data. The models open the door to a wide variety of advanced modeling applications in the analysis of the lightning EM field propagation over mountainous terrain and the location error of lightning location systems (LLSs) in the presence of in mountainous regions.

Source officielle

https://infoscience.epfl.ch/entities/publication/2a666c8a-5eac-4f85-946b-15e6026a82cb

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Marcos Rubinstein, Dongshuai Li
2019
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/2a666c8a-5eac-4f85-946b-15e6026a82cb

À propos de ce résultat

Concepts associés (20)

FDTD

FDTD est l'acronyme de l'expression anglaise Finite Difference Time Domain. C'est une méthode de calcul de différences finies dans le domaine temporel, qui permet de résoudre des équations différentielles dépendantes du temps. Cette méthode est couramment utilisée en électromagnétisme pour résoudre les équations de Maxwell. Cette méthode a été proposée par Kane S. Yee en 1966. Différences finies Méthode des différences finies Kane Yee, Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media, IEEE Transactions on Antennas and Propagation, 14, 1966, S.

Computational electromagnetics

Computational electromagnetics (CEM), computational electrodynamics or electromagnetic modeling is the process of modeling the interaction of electromagnetic fields with physical objects and the environment. It typically involves using computer programs to compute approximate solutions to Maxwell's equations to calculate antenna performance, electromagnetic compatibility, radar cross section and electromagnetic wave propagation when not in free space.

Terrain cartography

Terrain cartography or relief mapping is the depiction of the shape of the surface of the Earth on a map, using one or more of several techniques that have been developed. Terrain or relief is an essential aspect of physical geography, and as such its portrayal presents a central problem in cartographic design, and more recently geographic information systems and geovisualization. The most ancient form of relief depiction in cartography, hill profiles are simply illustrations of mountains and hills in profile, placed as appropriate on generally small-scale (broad area of coverage) maps.

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