Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol
Geoid model gave information in determination of orthometric height by knowing the ellipsoidal height. This ellipsoidal height using Global Navigation Satellite System (GNSS) technology. The main objective is to determine precise geoid models. There are several of method in determine geoid at any...
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| Format: | Thesis |
| Language: | English |
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2018
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| Online Access: | https://ir.uitm.edu.my/id/eprint/22561/ |
| _version_ | 1848805525580414976 |
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| author | Zol, Afiqah |
| author_facet | Zol, Afiqah |
| author_sort | Zol, Afiqah |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | Geoid model gave information in determination of orthometric height by knowing the
ellipsoidal height. This ellipsoidal height using Global Navigation Satellite System (GNSS)
technology. The main objective is to determine precise geoid models. There are several of
method in determine geoid at any country such as Remove- Compute-Restore (RCR) method.
In this study, the Least Square Modification Stokes' (LSMS) approach by Royal Institute of
Technology, (KTH) had been the aim for the evaluated in determine gravimetric geoid model
in Johor region. In order to increase the accuracy of geoid model. Global Geopotential Model
(GGM) along with Digital Elevation Model (DEM) are need. So that it achieved in study focus
which is evaluation of DEM and GGM. The result of this study is one of three GGM were
evaluate and ITU_GGC16 is the most precise global model that produce Root Mean Square
Error (RMSE) with 0.22m over 3367 gravity points. In additional, in DEM evaluation, the
SRTM30 show the RMSE with 7.12m. Furthermore, the precise gravimetric geoid model show
that Aster using ITU_GGCI6 show precise than SRTM30 and SRTM90 with 1.365m. The
comparison between RCR method where JUPEM used and KTH approach show that the LSMS
method is better in determine precise geoid model for Johor region. |
| first_indexed | 2025-11-14T22:12:25Z |
| format | Thesis |
| id | uitm-22561 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:12:25Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-225612022-10-25T08:33:06Z https://ir.uitm.edu.my/id/eprint/22561/ Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol Zol, Afiqah Information technology. Information systems GPS receivers Geoid model gave information in determination of orthometric height by knowing the ellipsoidal height. This ellipsoidal height using Global Navigation Satellite System (GNSS) technology. The main objective is to determine precise geoid models. There are several of method in determine geoid at any country such as Remove- Compute-Restore (RCR) method. In this study, the Least Square Modification Stokes' (LSMS) approach by Royal Institute of Technology, (KTH) had been the aim for the evaluated in determine gravimetric geoid model in Johor region. In order to increase the accuracy of geoid model. Global Geopotential Model (GGM) along with Digital Elevation Model (DEM) are need. So that it achieved in study focus which is evaluation of DEM and GGM. The result of this study is one of three GGM were evaluate and ITU_GGC16 is the most precise global model that produce Root Mean Square Error (RMSE) with 0.22m over 3367 gravity points. In additional, in DEM evaluation, the SRTM30 show the RMSE with 7.12m. Furthermore, the precise gravimetric geoid model show that Aster using ITU_GGCI6 show precise than SRTM30 and SRTM90 with 1.365m. The comparison between RCR method where JUPEM used and KTH approach show that the LSMS method is better in determine precise geoid model for Johor region. 2018 Thesis NonPeerReviewed other en https://ir.uitm.edu.my/id/eprint/22561/1/TD_AFIQAH%20ZOL%20AP%20R%2018.5.PDF Zol, Afiqah (2018) Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol. (2018) Degree thesis, thesis, Universiti Teknologi MARA, Perlis. <http://terminalib.uitm.edu.my/22561.pdf> |
| spellingShingle | Information technology. Information systems GPS receivers Zol, Afiqah Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol |
| title | Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol |
| title_full | Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol |
| title_fullStr | Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol |
| title_full_unstemmed | Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol |
| title_short | Effect global digital elevation model [GDEM] in geoid modelling using [KTH] method / Afiqah Zol |
| title_sort | effect global digital elevation model [gdem] in geoid modelling using [kth] method / afiqah zol |
| topic | Information technology. Information systems GPS receivers |
| url | https://ir.uitm.edu.my/id/eprint/22561/ |