Abstract: High resolution geoid models in different scales currently play a fundamental role in a wide range of the most challenging applications in geodesy and geosciences in general. The considerable development of these geoid models in recent years is mainly due to the advanced availability of satellite, airborne and terrestrial datasets. The aim of this paper is to provide an explanation for the comparison of Orthometric heights obtained from the observations of GNSS, EGM2008 and EGM1996 models. In this study, a large part of Federal Polytechnic Ado- Ekiti campus was selected. A total of twenty five (25) Ground Control Points (GCPs) were occupied for GNSS observations and Alltrans software 3.002was used for the computation of geoidal undulation of selected points. Dual frequency GPS Hi-Target was used in acquiring GPS data, which were processed using Hi-Target GNSS processor software for deriving........
Keyword: Geoidal height, GPS, Orthometric height
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