MODELING OF PROPAGATION LOSSES FOR HUMAN BEING BEHIND A BRICK WALL

摘要

In this paper, ultra-wideband propagation modeling and analysis of a human being behind a brick wall is presented. First, the propagation modeling of a brick wall and the propagation losses predicted by this model are obtained. Then, the modeling of a human being behind a brick wall is developed. The reflection coefficient, transmission coefficient and signal attenuation for such a through-the-wall (TTW) propagation are computed from the composite model consisting of a brick wall and a human being behind it using the method of impedance transformation. The variation of heart dimension with respect to time during a cardiac cycle is incorporated and the performance of the cardiac activity is studied from the change of signal attenuation. This estimation will enable in the design of an ultra wideband through-the wall radar which can be used as a non-invasive diagnostic system.