Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal

Traditional levelling in determination of heighting is time consuming, labor intensive and costly. With the advent of Global Positioning System (GPS) technology coordinate in 3D can be obtained with reasonable accuracy. This study investigates the capability of GPS as a tool of obtaining heights val...

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Main Author:	Zainal, Mohd Zainee
Format:	Thesis
Language:	English
Published:	2013
Subjects:	Radio GPS receivers Malaysia
Online Access:	https://ir.uitm.edu.my/id/eprint/15161/1/TM_MOHD%20ZAINEE%20ZAINAL%20AP%2013_5.pdf
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id	my-uitm-ir.15161
record_format	uketd_dc
spelling	my-uitm-ir.151612022-04-20T06:22:00Z Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal 2013-07 Zainal, Mohd Zainee Radio GPS receivers Malaysia Traditional levelling in determination of heighting is time consuming, labor intensive and costly. With the advent of Global Positioning System (GPS) technology coordinate in 3D can be obtained with reasonable accuracy. This study investigates the capability of GPS as a tool of obtaining heights value. Static and Real-Time Kinematic with Virtual Reference Station (RTK VRS) technique of GPS observation is chosen for height determination. For static observation mode, absolute and relative GPS heighting concepts are investigated. Only absolute GPS heighting concept is investigated in RTK VRS mode. The study area comprises of Negeri Sembilan and Melaka in Peninsular Malaysia. In this study, it is shown that static mode of GPS observation utilizing the absolute GPS heighting concept can achieve heighting difference between observed and known height in the range of -0.131 m and 0.045 m. The Root Mean Square (RMS) value for static mode using absolute GPS heighting concept is ±0.079 m. Static mode using relative GPS heighting concept gives mean relative accuracy of 2.6 ppm. In this study, the duration of GPS observation for point positioning is also investigated. For 5 hours of GPS observation, it is capable of determining height in the first-order accuracy points with less than 1.1 km (0.010. m). Using RTK VRS method of observation, the range of height difference is between -0.005 m and -0.202 m. The results also show that there are no significant differences between broadcast and precise ephemeris. From this research, it is possible to do GPS heighting in study area. 2013-07 Thesis https://ir.uitm.edu.my/id/eprint/15161/ https://ir.uitm.edu.my/id/eprint/15161/1/TM_MOHD%20ZAINEE%20ZAINAL%20AP%2013_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Architecture, Planning and Surveying Talib (Hj), Kamaluddin (Dr)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Talib (Hj), Kamaluddin (Dr)
topic	Radio GPS receivers Malaysia
spellingShingle	Radio GPS receivers Malaysia Zainal, Mohd Zainee Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal
description	Traditional levelling in determination of heighting is time consuming, labor intensive and costly. With the advent of Global Positioning System (GPS) technology coordinate in 3D can be obtained with reasonable accuracy. This study investigates the capability of GPS as a tool of obtaining heights value. Static and Real-Time Kinematic with Virtual Reference Station (RTK VRS) technique of GPS observation is chosen for height determination. For static observation mode, absolute and relative GPS heighting concepts are investigated. Only absolute GPS heighting concept is investigated in RTK VRS mode. The study area comprises of Negeri Sembilan and Melaka in Peninsular Malaysia. In this study, it is shown that static mode of GPS observation utilizing the absolute GPS heighting concept can achieve heighting difference between observed and known height in the range of -0.131 m and 0.045 m. The Root Mean Square (RMS) value for static mode using absolute GPS heighting concept is ±0.079 m. Static mode using relative GPS heighting concept gives mean relative accuracy of 2.6 ppm. In this study, the duration of GPS observation for point positioning is also investigated. For 5 hours of GPS observation, it is capable of determining height in the first-order accuracy points with less than 1.1 km (0.010. m). Using RTK VRS method of observation, the range of height difference is between -0.005 m and -0.202 m. The results also show that there are no significant differences between broadcast and precise ephemeris. From this research, it is possible to do GPS heighting in study area.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Zainal, Mohd Zainee
author_facet	Zainal, Mohd Zainee
author_sort	Zainal, Mohd Zainee
title	Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal
title_short	Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal
title_full	Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal
title_fullStr	Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal
title_full_unstemmed	Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal
title_sort	determination and evaluation of orthometric height derived from malaysian continuously operating reference station of myrtknet / mohd zainee zainal
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Architecture, Planning and Surveying
publishDate	2013
url	https://ir.uitm.edu.my/id/eprint/15161/1/TM_MOHD%20ZAINEE%20ZAINAL%20AP%2013_5.pdf
_version_	1783733351838908416

Determination and evaluation of orthometric height derived from Malaysian Continuously Operating Reference Station of MyRTKnet / Mohd Zainee Zainal

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