Staff View: The effect of UNBabc mapping function modification to GPS tropospheric delay

The effect of UNBabc mapping function modification to GPS tropospheric delay

Tropospheric delay refers to the refraction of the Global Positioning System (GPS) signal as it passes through the neutral atmosphere from the satellite to the earth, which causes longer distance traveled by the signal. The zenith tropospheric delay can be amplified by mapping function, especially f...

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Main Authors:	Sakidin, Hamzah, Abu Bakar, Mohd Rizam, Mohamed Shariff, Abdul Rashid, Md Nooraini, Mohd Salmi, Matori, Abd. Nasir, Mohamed, Azhari, Ahamd, Asmala
Format:	Article
Language:	English
Published:	Universiti Putra Malaysia Press 2008
Online Access:	http://psasir.upm.edu.my/id/eprint/17118/1/17118.pdf http://psasir.upm.edu.my/id/eprint/17118/ http://einspem.upm.edu.my/journal/volume2.1.php
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spelling	my.upm.eprints.171182015-05-27T08:19:55Z http://psasir.upm.edu.my/id/eprint/17118/ The effect of UNBabc mapping function modification to GPS tropospheric delay Sakidin, Hamzah Abu Bakar, Mohd Rizam Mohamed Shariff, Abdul Rashid Md Nooraini, Mohd Salmi Matori, Abd. Nasir Mohamed, Azhari Ahamd, Asmala Tropospheric delay refers to the refraction of the Global Positioning System (GPS) signal as it passes through the neutral atmosphere from the satellite to the earth, which causes longer distance traveled by the signal. The zenith tropospheric delay can be amplified by mapping function, especially for less than 5 degrees elevation angle. Many mapping functions have been established however the mapping functions give large value when the elevation angles less than 5 degrees. A modification of UNBabc mapping function has been proposed. The modified UNBabc mapping function model shows a significant reduction of mapping function scale factor. As the coefficient of the zenith tropospheric delay, the value of mapping function will affect total tropospheric delay. The modification UNBabc mapping function has improved the tropospheric delay up to 19.1 percent at two degree elevation angles. Universiti Putra Malaysia Press 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/17118/1/17118.pdf Sakidin, Hamzah and Abu Bakar, Mohd Rizam and Mohamed Shariff, Abdul Rashid and Md Nooraini, Mohd Salmi and Matori, Abd. Nasir and Mohamed, Azhari and Ahamd, Asmala (2008) The effect of UNBabc mapping function modification to GPS tropospheric delay. Malaysian Journal of Mathematical Sciences, 2 (1). pp. 59-71. ISSN 1823-8343 http://einspem.upm.edu.my/journal/volume2.1.php
institution	Universiti Putra Malaysia
building	UPM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Putra Malaysia
content_source	UPM Institutional Repository
url_provider	http://psasir.upm.edu.my/
language	English
description	Tropospheric delay refers to the refraction of the Global Positioning System (GPS) signal as it passes through the neutral atmosphere from the satellite to the earth, which causes longer distance traveled by the signal. The zenith tropospheric delay can be amplified by mapping function, especially for less than 5 degrees elevation angle. Many mapping functions have been established however the mapping functions give large value when the elevation angles less than 5 degrees. A modification of UNBabc mapping function has been proposed. The modified UNBabc mapping function model shows a significant reduction of mapping function scale factor. As the coefficient of the zenith tropospheric delay, the value of mapping function will affect total tropospheric delay. The modification UNBabc mapping function has improved the tropospheric delay up to 19.1 percent at two degree elevation angles.
format	Article
author	Sakidin, Hamzah Abu Bakar, Mohd Rizam Mohamed Shariff, Abdul Rashid Md Nooraini, Mohd Salmi Matori, Abd. Nasir Mohamed, Azhari Ahamd, Asmala
spellingShingle	Sakidin, Hamzah Abu Bakar, Mohd Rizam Mohamed Shariff, Abdul Rashid Md Nooraini, Mohd Salmi Matori, Abd. Nasir Mohamed, Azhari Ahamd, Asmala The effect of UNBabc mapping function modification to GPS tropospheric delay
author_facet	Sakidin, Hamzah Abu Bakar, Mohd Rizam Mohamed Shariff, Abdul Rashid Md Nooraini, Mohd Salmi Matori, Abd. Nasir Mohamed, Azhari Ahamd, Asmala
author_sort	Sakidin, Hamzah
title	The effect of UNBabc mapping function modification to GPS tropospheric delay
title_short	The effect of UNBabc mapping function modification to GPS tropospheric delay
title_full	The effect of UNBabc mapping function modification to GPS tropospheric delay
title_fullStr	The effect of UNBabc mapping function modification to GPS tropospheric delay
title_full_unstemmed	The effect of UNBabc mapping function modification to GPS tropospheric delay
title_sort	effect of unbabc mapping function modification to gps tropospheric delay
publisher	Universiti Putra Malaysia Press
publishDate	2008
url	http://psasir.upm.edu.my/id/eprint/17118/1/17118.pdf http://psasir.upm.edu.my/id/eprint/17118/ http://einspem.upm.edu.my/journal/volume2.1.php
_version_	1643826420175077376
score	13.211869

The effect of UNBabc mapping function modification to GPS tropospheric delay

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