An improved method to evaluate the slow fading signal over electrically massive scatterers

The paper presents an improved fast and accurate integral equation (IE) method to evaluate the slow fading signal over a two dimensional terrain profile. The local variation of the induced surface current with distance is modelled as a constant amplitude sinusoid (O´Nuallain, E., 2001). This model can be used to eliminate the computational overhead associated with modelling localised electromagnetic (EM) interactions and give accurate results. A significant reduction in the order of complexity of the problem and memory requirements ensues.