Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim

Ionosphere is one of layer at Earth's atmosphere. Ionosphere can be described a many layer and have own functional of systems at atmosphere. This paper described the examinations of two training algorithms which are Levenberg-Marquardt (LM) and Scaled Conjugate Gradient (SCG) of Multilayer Perc...

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التفاصيل البيبلوغرافية
المؤلف الرئيسي:	Ibrahim, Mohd Sharif
التنسيق:	أطروحة
اللغة:	English
منشور في:	2010
الوصول للمادة أونلاين:	https://ir.uitm.edu.my/id/eprint/80534/1/80534.pdf
الوسوم:	إضافة وسم لا توجد وسوم, كن أول من يضع وسما على هذه التسجيلة!

id	my-uitm-ir.80534
record_format	uketd_dc
spelling	my-uitm-ir.805342023-09-22T02:14:04Z Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim 2010 Ibrahim, Mohd Sharif Ionosphere is one of layer at Earth's atmosphere. Ionosphere can be described a many layer and have own functional of systems at atmosphere. This paper described the examinations of two training algorithms which are Levenberg-Marquardt (LM) and Scaled Conjugate Gradient (SCG) of Multilayer Perceptrons (MLPs) using MATLAB R2009a. Based on the result, there are concluded that both algorithms were comparable in terms of accuracy and speed. However, the SCG algorithm has shown better advantage in terms of accuracy and speed on the best MLP structure (with 25 hidden units). Ionosphere has a tendency to change due to the influence from the solar activity, which make it important to study the ionosphere layer. Ionosphere has the important effects on the propagation of radio waves links between satellite and ground stations, telecommunications, and guidance and surveillance radars. There are primarily three distinct layers in the ionosphere as like D, E and F layer. Each of the layers has its own significance to the ionosphere. This project described the F2 layer is suitable for high frequency (HF) radar. The F2 region is the most important region for HF radio propagation because it is present 24 hours of the day, high altitude the longest communications paths and reflects the highest frequencies in the HF range. This research also described the design of classification of radar returns from the ionosphere that have been investigated using Neural Network. 2010 Thesis https://ir.uitm.edu.my/id/eprint/80534/ https://ir.uitm.edu.my/id/eprint/80534/1/80534.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Sarnin, Suzi Seroja
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Sarnin, Suzi Seroja
description	Ionosphere is one of layer at Earth's atmosphere. Ionosphere can be described a many layer and have own functional of systems at atmosphere. This paper described the examinations of two training algorithms which are Levenberg-Marquardt (LM) and Scaled Conjugate Gradient (SCG) of Multilayer Perceptrons (MLPs) using MATLAB R2009a. Based on the result, there are concluded that both algorithms were comparable in terms of accuracy and speed. However, the SCG algorithm has shown better advantage in terms of accuracy and speed on the best MLP structure (with 25 hidden units). Ionosphere has a tendency to change due to the influence from the solar activity, which make it important to study the ionosphere layer. Ionosphere has the important effects on the propagation of radio waves links between satellite and ground stations, telecommunications, and guidance and surveillance radars. There are primarily three distinct layers in the ionosphere as like D, E and F layer. Each of the layers has its own significance to the ionosphere. This project described the F2 layer is suitable for high frequency (HF) radar. The F2 region is the most important region for HF radio propagation because it is present 24 hours of the day, high altitude the longest communications paths and reflects the highest frequencies in the HF range. This research also described the design of classification of radar returns from the ionosphere that have been investigated using Neural Network.
format	Thesis
qualification_level	Bachelor degree
author	Ibrahim, Mohd Sharif
spellingShingle	Ibrahim, Mohd Sharif Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim
author_facet	Ibrahim, Mohd Sharif
author_sort	Ibrahim, Mohd Sharif
title	Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim
title_short	Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim
title_full	Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim
title_fullStr	Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim
title_full_unstemmed	Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim
title_sort	comparison between levenberg-marquardt and scaled conjugate gradient training algorithms for ionosphere condition using multilayer perceptrons / mohd sharif ibrahim
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2010
url	https://ir.uitm.edu.my/id/eprint/80534/1/80534.pdf
_version_	1783736300859293696

Comparison between Levenberg-Marquardt and scaled conjugate gradient training algorithms for ionosphere condition using Multilayer Perceptrons / Mohd Sharif Ibrahim

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