The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip

Johor is characterized as one of the states that urbanized and also has flat terrain in this country's regions. So the existence of the high-resolution geoid model is considered very important with widespread of the GPS technology in the country. In this study, a new gravimetric geoid model is...

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Main Author:	Khalip, Nurlaili
Format:	Thesis
Language:	English
Published:	2019
Subjects:	Global Positioning System
Online Access:	https://ir.uitm.edu.my/id/eprint/23220/2/23220.pdf
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id	my-uitm-ir.23220
record_format	uketd_dc
spelling	my-uitm-ir.232202022-11-22T06:52:33Z The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip 2019 Khalip, Nurlaili Global Positioning System Geomorphology. Landforms. Terrain Johor is characterized as one of the states that urbanized and also has flat terrain in this country's regions. So the existence of the high-resolution geoid model is considered very important with widespread of the GPS technology in the country. In this study, a new gravimetric geoid model is computed for Johor region, by applying the method that was developed by Royal Institute of Technology (KTH) Stockholm-Sweden. The method utilizes the least-squares modification (LSM) of Stokes formula. The modified Stokes formula combines the regional terrestrial gravity data together with the long-wavelength gravity information from a global gravitational model (GGM). The Digital Elevation Model (DEM), SRTM generated by NASA and the National Imagery and Mapping Agency (NIMA) also used to compute topography effects on the geoid. Four additive corrections are computed over the entire target area and applied to the approximate geoid heights obtaining the final geoid solution. The gravimetric geoid is validated by using GPS-levelling information at 62 points distributed over the whole Johor. The results will show that the standard deviation (STD) of the differences between the gravimetric and geometric geoid heights at 62 GPS-levelling points. Smaller standard deviation means the geoid is a good model for Johor region. 2019 Thesis https://ir.uitm.edu.my/id/eprint/23220/ https://ir.uitm.edu.my/id/eprint/23220/2/23220.pdf text en public degree Universiti Teknologi MARA, Perlis Faculty of Architecture, Planning and Surveying Pa'suya, Muhammad Faiz
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Pa'suya, Muhammad Faiz
topic	Global Positioning System Global Positioning System
spellingShingle	Global Positioning System Global Positioning System Khalip, Nurlaili The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip
description	Johor is characterized as one of the states that urbanized and also has flat terrain in this country's regions. So the existence of the high-resolution geoid model is considered very important with widespread of the GPS technology in the country. In this study, a new gravimetric geoid model is computed for Johor region, by applying the method that was developed by Royal Institute of Technology (KTH) Stockholm-Sweden. The method utilizes the least-squares modification (LSM) of Stokes formula. The modified Stokes formula combines the regional terrestrial gravity data together with the long-wavelength gravity information from a global gravitational model (GGM). The Digital Elevation Model (DEM), SRTM generated by NASA and the National Imagery and Mapping Agency (NIMA) also used to compute topography effects on the geoid. Four additive corrections are computed over the entire target area and applied to the approximate geoid heights obtaining the final geoid solution. The gravimetric geoid is validated by using GPS-levelling information at 62 points distributed over the whole Johor. The results will show that the standard deviation (STD) of the differences between the gravimetric and geometric geoid heights at 62 GPS-levelling points. Smaller standard deviation means the geoid is a good model for Johor region.
format	Thesis
qualification_level	Bachelor degree
author	Khalip, Nurlaili
author_facet	Khalip, Nurlaili
author_sort	Khalip, Nurlaili
title	The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip
title_short	The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip
title_full	The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip
title_fullStr	The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip
title_full_unstemmed	The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip
title_sort	effect of ggm local geoid determination by using [kth] method / nurlaili khalip
granting_institution	Universiti Teknologi MARA, Perlis
granting_department	Faculty of Architecture, Planning and Surveying
publishDate	2019
url	https://ir.uitm.edu.my/id/eprint/23220/2/23220.pdf
_version_	1783733827745611776

The effect of GGM local geoid determination by using [KTH] method / Nurlaili Khalip

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