Title :
Three-Dimensional Terrain Effects on High Frequency Electromagnetic Wave Propagation
Author :
Zhu, N.Y. ; Landstorfer, F.M. ; Greving, G.
Author_Institution :
Institut fÿr Hochfrequenztechnik, Universitÿt Stuttgart, Pfaffenwaldring 47, D-7000 Stuttgart 80, Germany
Abstract :
The uniform geometrical theory of diffraction (UTD) is applied to consider three-dimensional terrain effects on high frequency wave propagation. Planar convex polygons are used to approximate a given terrain and the electrical characteristics of each polygon are given through the relative dielectric constant and the conductivity. The roughness can be considered approximately as well. A heuristic uniform diffraction coefficient is derived for an imperfectly conduting wedge.
Keywords :
Conductivity; Dielectric constant; Electromagnetic propagation; Electromagnetic waveguides; Frequency; Optical diffraction; Optical surface waves; Optical waveguides; Physical theory of diffraction; Solid modeling;
Conference_Titel :
Microwave Conference, 1991. 21st European
Conference_Location :
Stuttgart, Germany
DOI :
10.1109/EUMA.1991.336509
