Empirical Geoid Modelling Using Classical Gravimetric Method

Abstract

This paper presents Gravimetric geoid modelling using the remove-restore-compute approach for Lagos State. The direct method of computation of the stokes integral was used in computing the geoidal undulation from archived gravity anormaly values obtained from BGI. An empirical geoid solution for the study area was thereafter developed from the resulting gravimetric geoid model using least squares technique. The obtained gravimetric geoid had a RMSE of 2.37cm when compared with GPS/Levelling geoid of the same area, while the empirical geoid model had a RMSE of 6.6mm when compared with the Gravimetric Geoid Model.