FIG Peer Review Journal


Geoid Model Estimation Without Additive Correction Using KTH Approach for Peninsular Malaysia (6809)

Saiful Aman Hj Sulaiman, Kamaluddin Hj Talib, Othman Mohd Yusof, Jasmee Jaafar and Mat Akhir Md Wazir (Malaysia)
Mr. Saiful Aman Hj Sulaiman
Universiti Teknologi MARA, Malaysia
Centre of Surveying Science and Geomatic Studies
Faculty of Architecture, Planning and Surveying
Shah Alam
Corresponding author Mr. Saiful Aman Hj Sulaiman (email: saifulaman[at], tel.: 03-55444442)

[ abstract ] [ paper ] [ handouts ]

Published on the web 2014-03-21
Received 2013-11-15 / Accepted 2014-02-06
This paper is one of selection of papers published for the FIG Congress 2014 in Kuala Lumpur, Malaysia and has undergone the FIG Peer Review Process.

FIG Congress 2014
ISBN 978-87-92853-21-9 ISSN 2308-3441


Geoid model is the vital information in the determination of orthometric height using GNSS technology. Determination of precise geoid model is the main research agenda around the globe. There is several approaches in computing and developing geoid model. The present study investigated a procedure for combining a selected geopotential model and the available observed land gravity data in order to determine precise geoid model for Peninsular Malaysia by using KTH approach. The optimum combination of condition parameter (M=L= 120, Ψ_0=3.0o, Ψ=0.4o and σ_∆g= 1.0 mGal) were used to compute the value of Modification coefficient parameters and then generate estimated gravimetric geoid model. The estimated gravimetric geoid model from Peninsular Malaysia are compared with the GPS/Levelling at selected control points and the result shown that the Root Mean Square Error (RMS) differences between orthometric height derived by GPS/Levelling and existing height value from local datum is ±12.8cm in the absolute sense. This result shows the preliminary geoid model for Peninsular Malaysia. Further refinement needs to be done especially in the additional of land observed gravity data at no data area and also impose related corrections.
Keywords: GNSS/GPS; KTH, Geoid, LSMS