%0 Journal Article 
%T Calibración Basada en Medidas para Modelos de Trazado de Rayos en 3D para Ambientes Exteriores Urbanos andinos
%J Sistemas y Telemática;Vol. 10, No. 21 - 2012
%D 2012
%@ 1692-5238
%U http://www.icesi.edu.co/revistas/index.php/sistemas_telematica/article/view/1195
%X Due to the complexity of a real situation, estimation of path
loss using the ray-tracing method usually assumes one or
three large classes of homogeneous materials to represent
the building walls, building roofs and street floors in order
to have a viable model of the 3D environment. However,
in a real case, an outdoor environment consists of many
buildings and streets made of heterogeneous materials.
Additionally, the characterizations of these classes of
materials are usually taken from research of other authors
with specific materials on site and often not done for the
frequency band of operation. We analyze the behavior of
the statistical variation of standard deviation, correlation
coefficient and the average error between the values of
estimated and measured path loss data when considering
various values of permittivity of these three classes.
Finally, we adjust the values of permittivity, obtaining a
reasonable improvement of ray tracing to estimate the
path-loss
%K Facultad de Ingeniería
%K Producción intelectual registrada - Universidad Icesi
%K Trazado de ciudades
%K Modelos  3D
%K Optimización
%K Calibración
%K Ingeniería de sistemas y comunicaciones
%K Telecommunication
%K Systems engineering
%K Automatización y sistemas de control
%K Command and control system
%K Hardware y arquitectura de computadores
%K Systems Application Architecture
%~ GOEDOC, SUB GOETTINGEN