NDLI: Application of the spectral acceleration forward-backward method for propagation over terrain

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Application of the spectral acceleration forward-backward method for propagation over terrain

Content Provider	Semantic Scholar
Author	Tunc, Celal Alp
Copyright Year	2004
Abstract	APPLICATION OF SPECTRAL ACCELERATION FORWARD-BACKWARD METHOD FOR PROPAGATION OVER TERRAIN Celal Alp Tunç M.S. in Electrical and Electronics Engineering Supervisor: Prof. Dr. Ayhan Altıntaş September 2003 Mobile radio planning requires the accurate prediction of electromagnetic field strengths over large terrain profiles. However, numerical methods, like MoM, become not suitable for electrically large surfaces, because of the O(N ) computational cost due to the large number of surface unknowns N . The ForwardBackward Method (FBM) is a stationary iterative technique for solving linear equation systems resulting from electromagnetic rough surface scattering problems and provides accurate results within very few iterations, causing a computational cost of O(N ). The Spectral Acceleration technique reduces the computational cost and memory requirements of the FBM to O(N), so that the Spectrally Accelerated Forward-Backward Method (FBSA) can be applied over very large terrain profiles. Empirical models with reflection and multiple diffraction (RMD) corrections are commonly used to predict the field strengths over terrain profiles. In this work, applications of the FBM and FBSA are presented over electrically large terrain profiles. Also, using FBSA as a reference solution, the most common empirical models with RMD correction methods are examined to find out the best propagation models. iii
Starting Page	187
Ending Page	188
Page Count	2
File Format	PDF HTM / HTML
DOI	10.1049/cp:20040503
Alternate Webpage(s)	http://www.thesis.bilkent.edu.tr/0002378.pdf
Alternate Webpage(s)	https://doi.org/10.1049/cp%3A20040503
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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