Detailed analysis of amplitude and slope diffraction coefficients for knife-edge structure in S-UTD-CH model

Yükleniyor...
Küçük Resim

Tarih

2017

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

ASTES Publishers

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

In urban, rural and indoor applications, diffraction mechanism is very important to predict the field strength and calculate the coverage accurately. The diffraction mechanism takes place on NLOS (non-line-of-sight) cases like rooftop, vertex, corner, edge and sharp surfaces. S-UTD-CH model computes three type of electromagnetic wave incidence such as direct, reflected and diffracted waves, respectively. As obstacles in diffraction geometry are in the same or closer height, contribution of the diffraction mechanism is dominant. To predict the diffracted fields accurately, amplitude and slope diffraction coefficients and the derivative of these coefficients have to be taken correctly. In this paper, all the derivations about diffraction coefficients are made for knife edge type structures and extensive simulations are performed in order to analyze the amplitude and diffraction coefficients. In plane angle diffraction, contributions of amplitude and slope diffraction coefficient are maxima. © 2017 ASTES Publishers. All rights reserved.

Açıklama

Anahtar Kelimeler

Diffraction coefficient, S-UTD-CH model, Wave Diffraction

Kaynak

Advances in Science, Technology and Engineering Systems

WoS Q Değeri

Scopus Q Değeri

N/A

Cilt

2

Sayı

3

Künye