Wide-band characterization of building materials for propagation modeling : analysis of dispersion phenomena

In this paper, original developments based on high resolution (HR) algorithms (MUSIC, matrix pencil) are proposed for the spectral analysis of reflection and transmission interactions experienced by a short electromagnetic pulse with construction materials. Such algorithms, whose specificity lies in frequency-dependent multipath phenomena, have been used to reconstruct the impulse responses of a sample from data obtained in a wide but limited bandwidth. The influence of parameters associated with the sample structures has been studied in order to evaluate the performance of HR algorithms in material characterization. Such a study leads to a useful tool for the analysis of free-space measurements. Analysis of experimental data obtained from usual materials are presented.