Wave Propagation in a Vegetated Residential Area Using the Distorted Born Approximation and the Fresnel-Kirchhoff Approximation
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 4Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Torrico, Saúl A. (Comsearch, 19700 Janelia Farm Boulevard, Ashburn, Virginia 20147 USA)
Lang, Roger H. (Department of Electrical and Computer Engineering, The George Washington University, Washington, DC 20052, USA)
A theoretical model is proposed to include the incoherent fields along with the coherent fields to compute the excess loss in a vegetated residential environment, with particular application to mobile radio systems. Physical optics is used to evaluate the diffracting fields at the receiver level by using multiple Kirchhoff-Huygens integration for each half-screen combination. The fields at the aperture of each half-screen depend on the mean field passing through a tree and the incoherent fields produced by the tree canopy. The mean field in the tree canopy is found by using the multiple scattering theory of Foldy-Lax. The incoherent field produced by the tree canopy is found by using the distorted Born approximation.