S-UTD-CH model in multiple diffraction geometry [Dişbükey zarf tekni?ine dayali e?im kirinimi modelinin çoklu kirinim geometrisinde kullanilmasi]

Abstract

Calculation of relative path loss of electromagnetic wave in multiple diffraction geometries is important. In this respect, many diffraction models have been introduced. There is a trade-off between computation time and accuracy of estimated field strength. Some models have higher computation time with lower accuracy, or vice versa. In this study, Slope UTD with Convex Hull (S-UTD-CH), optimum model for accuracy and computation time, is introduced briefly, and simulation results are given. S-UTD-CH model is based on slope diffraction (S-UTD) including slope terms of UTD, and convex hull (CH) method. It is observed in simulation how polarization types, interior wedge angle, conductivity and relative permittivity of wedge affects the relative path loss. Moreover, comparative results of different models with respect to accuracy and computational time for a given profile are presented in this study.