POLARIZATION-DEPENDENT SITE-SHIELDING FACTOR OF BLOCK-SHAPED OBSTACLE

A comparison between the measured and theoretically predicted site-shi elding factor (SSF) of an obstacle resembling a building is made. The SSF, which expresses the additional attenuation caused by an obstacle on the propagation path, is measured along a cylindrical arc behind th e obstacle at a frequency of 50 GHz. The theoretical model uses the un iform geometrical theory of diffraction (UTD) including comer, edge-to -edge, and edge-to-comer diffraction. The agreement between the measur ed and theoretically derived results is excellent. The strong polarisa tion dependence of the SSF encountered appears to be due to slope diff raction.