Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia
The algorithm for orthometric height transfer using GPS has been widely presented. Its practical limitations are mostly due to datum bias inconsistencies and lack of precise geoid. In most applications, datum biases are assumed to be systematic over short baselines and therefore could be eliminated...
| Main Authors: | , , |
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| Format: | Monograph |
| Language: | English |
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Faculty of Geoinformation Science and Engineering (FKSG)
2003
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| Online Access: | http://eprints.utm.my/2820/1/72367.pdf |
| _version_ | 1825909293500596224 |
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| author | Mohd. Omar, Kamaludin Ses, Shahrum Mohamed, Azhari |
| author_facet | Mohd. Omar, Kamaludin Ses, Shahrum Mohamed, Azhari |
| author_sort | Mohd. Omar, Kamaludin |
| collection | ePrints |
| description | The algorithm for orthometric height transfer using GPS has been widely presented. Its practical limitations are mostly due to datum bias inconsistencies and lack of precise geoid. In most applications, datum biases are assumed to be systematic over short baselines and therefore could be eliminated by differential heighting techniques. In this study, optimal algorithms were investigated to model biases between local vertical datum in Peninsular Malaysia and the datums implied by by EGM96, OSU91A and the regional Gravimetric Geoid in South_East Asia. The study has indicated that local vertical datum is not physically parallel to the datums implied by the above geoids. The shift parameters between the datums implied by the GPS/leveling data, and the EGM96, OSU91A and the gravimetric datums are about – 41cm, -54 cm and – 8 cm respectively. Also the maximum tilts of the planes fitting the residual geoids above these datums relative to GPS/Leveling datum are of the order of 36, 51 and 33 centimeters per degree. It is therefore necessary to take into account the effect of inconsistent datum bias particularly for baseline height transfer. The level of accuracy achieved by the bias corrected relative orthometric height differences of the EGM96, OSU91A and the gravimetric geoid models combined with GPS/leveling data for baseline lengths up to 36 km, is sufficient to replace the conventional tedious, time consuming ordinary leveling technique for rapid height transfer for land surveying and engineering applications. |
| first_indexed | 2024-03-05T17:59:59Z |
| format | Monograph |
| id | utm.eprints-2820 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T17:59:59Z |
| publishDate | 2003 |
| publisher | Faculty of Geoinformation Science and Engineering (FKSG) |
| record_format | dspace |
| spelling | utm.eprints-28202012-01-16T07:24:56Z http://eprints.utm.my/2820/ Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia Mohd. Omar, Kamaludin Ses, Shahrum Mohamed, Azhari T Technology (General) The algorithm for orthometric height transfer using GPS has been widely presented. Its practical limitations are mostly due to datum bias inconsistencies and lack of precise geoid. In most applications, datum biases are assumed to be systematic over short baselines and therefore could be eliminated by differential heighting techniques. In this study, optimal algorithms were investigated to model biases between local vertical datum in Peninsular Malaysia and the datums implied by by EGM96, OSU91A and the regional Gravimetric Geoid in South_East Asia. The study has indicated that local vertical datum is not physically parallel to the datums implied by the above geoids. The shift parameters between the datums implied by the GPS/leveling data, and the EGM96, OSU91A and the gravimetric datums are about – 41cm, -54 cm and – 8 cm respectively. Also the maximum tilts of the planes fitting the residual geoids above these datums relative to GPS/Leveling datum are of the order of 36, 51 and 33 centimeters per degree. It is therefore necessary to take into account the effect of inconsistent datum bias particularly for baseline height transfer. The level of accuracy achieved by the bias corrected relative orthometric height differences of the EGM96, OSU91A and the gravimetric geoid models combined with GPS/leveling data for baseline lengths up to 36 km, is sufficient to replace the conventional tedious, time consuming ordinary leveling technique for rapid height transfer for land surveying and engineering applications. Faculty of Geoinformation Science and Engineering (FKSG) 2003-06-30 Monograph NonPeerReviewed application/pdf en http://eprints.utm.my/2820/1/72367.pdf Mohd. Omar, Kamaludin and Ses, Shahrum and Mohamed, Azhari (2003) Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia. Project Report. Faculty of Geoinformation Science and Engineering (FKSG). (Unpublished) |
| spellingShingle | T Technology (General) Mohd. Omar, Kamaludin Ses, Shahrum Mohamed, Azhari Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia |
| title | Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia
|
| title_full | Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia
|
| title_fullStr | Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia
|
| title_full_unstemmed | Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia
|
| title_short | Enhancement of height system for Malaysia using space technology: the study of the datum bias inconsistencies in Peninsular Malaysia
|
| title_sort | enhancement of height system for malaysia using space technology the study of the datum bias inconsistencies in peninsular malaysia |
| topic | T Technology (General) |
| url | http://eprints.utm.my/2820/1/72367.pdf |
| work_keys_str_mv | AT mohdomarkamaludin enhancementofheightsystemformalaysiausingspacetechnologythestudyofthedatumbiasinconsistenciesinpeninsularmalaysia AT sesshahrum enhancementofheightsystemformalaysiausingspacetechnologythestudyofthedatumbiasinconsistenciesinpeninsularmalaysia AT mohamedazhari enhancementofheightsystemformalaysiausingspacetechnologythestudyofthedatumbiasinconsistenciesinpeninsularmalaysia |