Stochastic Analysis of Scattered Field by Building Facades Using Polynomial Chaos

This paper presents a statistical assessment of scattered field from a building facade having random physical and geometrical parameters. A simple inhomogeneous model is considered for the building, and the calculation method is based on Green´s functions. The basis of polynomial chaos expansion method is explained and applied to estimate the scattered electric field from a building facade having 8 random parameters, in specular and nonspecular scenarios. Uncertainty analysis and total output distribution are discussed in different diffraction zones of the building.