Wide-angle shift-map PE for a piecewise linear terrain—A finite-difference approach

PD Holm - IEEE Transactions on Antennas and Propagation, 2007 - ieeexplore.ieee.org
A wide-angle parabolic wave equation solution is presented using shift-map and finite-
difference techniques. The corresponding split-step Fourier solution is well known. The …

Improvements on slope diffraction for multiple wedges

MB Tabakcioglu, A Kara - Electromagnetics, 2010 - Taylor & Francis
This article proposes an improved slope uniform theory of diffraction model for fast and more
accurate field prediction for multiple wedge diffractions in the transition zone. The proposed …

S-UTD-CH model in multiple diffractions

MB Tabakcioglu - International Journal of Electronics, 2016 - Taylor & Francis
The propagation of electromagnetic waves in empty space is an extremely simplified case.
Thus, the significant question is how an electromagnetic wave propagates in an …

Multipath exploitation in emitter localization for irregular terrains

Y Dalveren, A Kara - Radioengineering, 2019 - avesis.gazi.edu.tr
Electronic Support Measures (ESM) systems have many operational challenges while
locating radar emitter's position around irregular terrains such as islands due to multipath …

[HTML][HTML] Determination of scattering center of multipath signals using geometric optics and Fresnel zone concepts

KY Kapusuz, A Kara - … Science and Technology, an International Journal, 2014 - Elsevier
In this study, a method for determining scattering center (or center of scattering points) of a
multipath is proposed, provided that the direction of arrival of the multipath is known by the …

Extensive comparison results of coverage map of optimum base station location of digital terrain with utd based model

MB Tabakcioglu - Progress In Electromagnetics Research M, 2020 - jpier.org
In order to provide high quality of service broadcasting systems, predicting the electric field
strength in all the receiving points and generating the coverage map of the transmitter are …

On the improvements in multiple edge transition zone diffraction

MB Tabakcioglu, A Kara - 2007 - IET
In this paper, classical uniform theory of diffraction (UTD) and its extension to multiple
transition edge diffraction, slope UTD, is discussed. A 2-D ray tracing algorithm based on …

A top-down approach to S-UTD-CH model

MB Tabakcioglu - The Applied Computational …, 2017 - journals.riverpublishers.com
Free space electromagnetic wave propagation is an excessively pretty simple. However, in
the reality, there are obstructions like buildings and hills blocking the electromagnetic waves …

Modelling of shadowing loss due to huge non-polygonal structures in urban radio propagation

A Kara, E Yazgan - Progress In Electromagnetics Research B, 2008 - jpier.org
Ray tracing algorithms rely on two dimensional or three dimensional database. They use ray
optical techniques referred to as the uniform theory of diffraction (UTD) using building …

Comparison and analyzing of propagation models with respect to material, environmental and wave properties

MB Tabakcioglu, D Ayberkin… - The Applied …, 2014 - journals.riverpublishers.com
This paper presents a study on a class of algorithms based on Uniform Theory of Diffraction
(UTD) for multiple diffractions. Within this context Slope UTD with Convex Hull (S-UTD-CH) …