A high-frequency field prediction model, useful to evaluate the radio wave propagation in realistic tunnels having rectangular cross-section, is presented. The model is based on a hybrid implicit/explicit finite-difference numerical scheme adopted to solve the vector parabolic equation (V-PE) governing the electromagnetic field propagation in straight and curved tunnels. To model the materials forming the-tunnel walls, mixed Dirichlet-Von Neumann boundary conditions are employed. In this way, all the relevant field propagation processes are properly taken into account. To show the feasibility of the proposed numerical method, results concerning the spatial distribution of the electromagnetic field and the power flux in straight and curved rectangular tunnels are provided. An analysis concerning the convergence properties of the proposed numerical scheme is also reported.

A Numerical Scheme for the Solution of the Vector Parabolic Equation Governing the Radio Wave Propagation in Straight and Curved Rectangular Tunnels / Bernardi, Paolo Italo; Caratelli, Diego; Cicchetti, Renato; V., Schena; Testa, Orlandino. - In: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. - ISSN 0018-926X. - STAMPA. - 57:10 PART 2(2009), pp. 3249-3257. [10.1109/tap.2009.2027142]

A Numerical Scheme for the Solution of the Vector Parabolic Equation Governing the Radio Wave Propagation in Straight and Curved Rectangular Tunnels

BERNARDI, Paolo Italo;CARATELLI, Diego;CICCHETTI, Renato;TESTA, Orlandino
2009

Abstract

A high-frequency field prediction model, useful to evaluate the radio wave propagation in realistic tunnels having rectangular cross-section, is presented. The model is based on a hybrid implicit/explicit finite-difference numerical scheme adopted to solve the vector parabolic equation (V-PE) governing the electromagnetic field propagation in straight and curved tunnels. To model the materials forming the-tunnel walls, mixed Dirichlet-Von Neumann boundary conditions are employed. In this way, all the relevant field propagation processes are properly taken into account. To show the feasibility of the proposed numerical method, results concerning the spatial distribution of the electromagnetic field and the power flux in straight and curved rectangular tunnels are provided. An analysis concerning the convergence properties of the proposed numerical scheme is also reported.
2009
electromagnetic field propagation; finite-difference numerical scheme; high-frequency prediction models; railway and road tunnels; vector parabolic equation (vpe)
01 Pubblicazione su rivista::01a Articolo in rivista
A Numerical Scheme for the Solution of the Vector Parabolic Equation Governing the Radio Wave Propagation in Straight and Curved Rectangular Tunnels / Bernardi, Paolo Italo; Caratelli, Diego; Cicchetti, Renato; V., Schena; Testa, Orlandino. - In: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. - ISSN 0018-926X. - STAMPA. - 57:10 PART 2(2009), pp. 3249-3257. [10.1109/tap.2009.2027142]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/227212
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