Abstract Purpose – To provide a detailed investigation about methods commonly used for the computation of high-frequency electromagnetic fields in the vicinity of obstacles that can reflect or diffract them. This is useful to create an elementary block that can be used to evaluate with a high accuracy the propagation of high-frequency electromagnetic waves in real urban environment. Design/methodology/approach – The approach is based on a realistic application of the asymptotic theory of the uniform theory of diffraction. Therefore, the effect of material roughness and its electromagnetic properties on the reflection are taken into account. Findings – Provides information about the mechanisms involved in electromagnetic field propagation in urban environment, and the relative importance of each one. Research limitations/implications – In urban environment the buildings obviously have finite dimensions. The diffraction equations examined in the paper are strictly valid only in the case of infinite wedges; therefore, the behaviour of real building edges has not been taken rigorously into account. Practical implications – A source of information for researchers interested in the development of a simulator for the electromagnetic propagation in urban environment. Originality/value – This paper is aimed at providing to researchers, in a more comprehensive way, all information needed for the study of electromagnetic propagation in an environment containing many close scatterers.

Electromagnetic plane wave scattering from building surfaces

DELFINO, FEDERICO;GIRDINIO, PAOLA;NERVI, MARIO
2006-01-01

Abstract

Abstract Purpose – To provide a detailed investigation about methods commonly used for the computation of high-frequency electromagnetic fields in the vicinity of obstacles that can reflect or diffract them. This is useful to create an elementary block that can be used to evaluate with a high accuracy the propagation of high-frequency electromagnetic waves in real urban environment. Design/methodology/approach – The approach is based on a realistic application of the asymptotic theory of the uniform theory of diffraction. Therefore, the effect of material roughness and its electromagnetic properties on the reflection are taken into account. Findings – Provides information about the mechanisms involved in electromagnetic field propagation in urban environment, and the relative importance of each one. Research limitations/implications – In urban environment the buildings obviously have finite dimensions. The diffraction equations examined in the paper are strictly valid only in the case of infinite wedges; therefore, the behaviour of real building edges has not been taken rigorously into account. Practical implications – A source of information for researchers interested in the development of a simulator for the electromagnetic propagation in urban environment. Originality/value – This paper is aimed at providing to researchers, in a more comprehensive way, all information needed for the study of electromagnetic propagation in an environment containing many close scatterers.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/246284
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