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International Journal of Antennas and Propagation
Volume 2015, Article ID 258060, 13 pages
http://dx.doi.org/10.1155/2015/258060
Research Article

A Three-Component Model Based on Macropropagation Phenomena Approach for Complex Building Scattering

1Onera (The French Aerospace Lab), Electromagnetism and Radar Department, Radio-Communication and Propagation Research Unit, 2 avenue Edouard Belin, 31055 Toulouse, France
2Signal Theory and Communication Department, University of Vigo, 36310 Vigo, Spain
3Centre National d’Etudes Spatiales (CNES), 18 avenue Edouard Belin, 31400 Toulouse, France
4Thales Alenia Space, 26 avenue Jean Francois Champollion, 31100 Toulouse, France
5Institut Supérieur de l’Aéronautique et de l’Espace (ISAE), Campus Supaéro, 10 avenue Edouard Belin, 31055 Toulouse, France

Received 28 November 2014; Accepted 7 June 2015

Academic Editor: Atsushi Mase

Copyright © 2015 Mehdi Ait-Ighil et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Multipaths represent a common predominant and uncontrolled component on channel impairments for all terrestrial and Land Mobile Satellite systems. Without restrictions w.r.t mobile terrestrial applications, the addressed multipath problematic in this paper is focused on Land Mobile Satellite applications where delayed signal replicas are highly impacting performances on communication systems while they induce strong positioning errors for navigation systems. The actual trend in propagation channel modelling is to improve the multipath characterisation and representation by using semideterministic and hybrid physical-statistical models into channel simulators instead of narrow-band empirical approaches. In this context, this paper presents a new simplified model, called 3CM (3-Component Model) to reproduce building scattering in an efficient way which strongly improves computation performances. This model is based on asymptotic methods, namely, PO (Physical Optics) which allows the 3CM to be frequency scalable, polarimetric, and dielectric materials oriented. Note that the proposed model and the retained approach can be integrated into more complex tools such as existing ray tracers. However, this issue is not discussed in this paper.