Diffraction at a Surface Impedance Discontinuity - Application to Sea-Land Radiowave Propagation.
Annual technical rept. no. 1, Oct 78-Sep 79,
NAPLES UNIV (ITALY) IST ELETTROTECNICO
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Full solution of plane wave diffraction by a surface impedance discontinuity on a plane is presented. The solution is given for both normal and oblique incidence, the diffraction integral being evaluated asymptotically in a closed form. This solution extends previous results of Maliuzhinets, valid only for normal incidence, and singular at reflection boundaries. For practical application to radiowave propagation over the Earth, the field close to the surface is of interest. This is represented as incident, reflected, surface and extra term field, this last characteristic of the surface impedance discontinuity. In addition, a cylindrical wave, scattered by the discontinuity is present. The field produced by prescribed sources can be synthesized using a plane wave expansion and then applying results of the scattering analysis. Author
- Radiofrequency Wave Propagation