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The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay

MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.

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Bibliographic Details
Main Authors:	Hamzah, Sakidin, Tay, Choo Chuan, Saedah, Sakidin
Format:	Working Paper
Language:	English
Published:	Universiti Malaysia Pahang (UMP) 2010
Subjects:	Global Positioning System (GPS) Modeling Tropospheric Modification Zenith Delay Atmospheric delay Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
Online Access:	http://dspace.unimap.edu.my/xmlui/handle/123456789/9067
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spelling	my.unimap-90672010-08-25T01:35:38Z The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay Hamzah, Sakidin Tay, Choo Chuan Saedah, Sakidin Global Positioning System (GPS) Modeling Tropospheric Modification Zenith Delay Atmospheric delay Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang. Global Positioning System (GPS) tropospheric delay refers to the refraction of the GPS signal as it passes through the neutral atmosphere from the satellite to the earth, which causes longer distance traveled by the signal. The issue of atmospheric delay is investigated to minimize the positioning error due to tropospheric and ionospheric delay. The mathematical modeling on the tropospheric model should be revised and also modified to improve the delay. The zenith tropospheric delay can be amplified by a coefficient factor called mapping function to form total tropospheric delay. There are many mapping functions have been established to calculate the scale factor which can affect the total tropospheric delay. However, the mapping functions give large value when the elevation angles less than 5 degrees. The modification of the continued fractions by replacing sine function to cosine function in the popular mapping function called UNBabc has been proposed and tested to ensure the improvement of the result. The result of the modification, show a significant reduction of mapping function scale factor. The modified UNBabc mapping function has improved the tropospheric delay up to 19.1% at 2 degree elevation angle. This modified mapping function could be used as the alternative mapping function. 2010-08-25T01:35:38Z 2010-08-25T01:35:38Z 2009-06-20 Working Paper p.609-613 http://hdl.handle.net/123456789/9067 en Proceedings of the Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) 2009 Universiti Malaysia Pahang (UMP)
institution	Universiti Malaysia Perlis
building	UniMAP Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Perlis
content_source	UniMAP Library Digital Repository
url_provider	http://dspace.unimap.edu.my/
language	English
topic	Global Positioning System (GPS) Modeling Tropospheric Modification Zenith Delay Atmospheric delay Malaysian Technical Universities Conference on Engineering and Technology (MUCEET)
spellingShingle	Global Positioning System (GPS) Modeling Tropospheric Modification Zenith Delay Atmospheric delay Malaysian Technical Universities Conference on Engineering and Technology (MUCEET) Hamzah, Sakidin Tay, Choo Chuan Saedah, Sakidin The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay
description	MUCEET 2009 is organized by Malaysian Technical Universities Network (MTUN) comprising of Universiti Malaysia Perlis (UniMAP), Universiti Tun Hussein Onn (UTHM), Universiti Teknikal Melaka (UTeM) and Universiti Malaysia Pahang (UMP), 20th - 22nd June 2009 at M. S. Garden Hotel, Kuantan, Pahang.
format	Working Paper
author	Hamzah, Sakidin Tay, Choo Chuan Saedah, Sakidin
author_facet	Hamzah, Sakidin Tay, Choo Chuan Saedah, Sakidin
author_sort	Hamzah, Sakidin
title	The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay
title_short	The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay
title_full	The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay
title_fullStr	The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay
title_full_unstemmed	The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay
title_sort	effect of modified unbabc mapping function on the improvement of global positioning system tropospheric delay
publisher	Universiti Malaysia Pahang (UMP)
publishDate	2010
url	http://dspace.unimap.edu.my/xmlui/handle/123456789/9067
_version_	1643789383104462848
score	13.222552

The effect of modified UNBabc mapping function on the improvement of Global Positioning System tropospheric delay

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