Surface Waves Due to Geometrical Discontinuities over Ground

Abstract

Summary The “ground wave” measured with the receiving antenna is actually inhomogeneous lateral wave, guided by the homogeneous plane wave which propagates along the surface of the ground and they have strong effect in communication systems. In this study, we examine surface waves due to geometrical discontinuities over the ground. This is done by simulating the problem as a diffraction phenomena. The boundary value problem leads to vector Wiener-Hopf equation which is reduced to scalar form and solved by standard techniques. The asymptotic expressions for the diffraction are obtained by evaluating the field integrals asymptotically. Surface waves and related currents are analyzed by using Wiener-Hopf technique in detail. Some numerical examples are also presented.