Scattered electromagnetic field variations due to building facade properties

A computation method based on the Green´s functions associated with the interface between two semi-infinite media is used to obtain the scattered electric field in the near and far zones of a building. A simplified model taking account of the inhomogeneities on the building facade is considered. Different sources of uncertainty for the scattered electric field related to the building facade are presented, such as the main material property, the size, type and distribution of windows. An appropriate statistical distribution is attributed to each varying parameter and the influence on the scattered field from the facade is quantified.