Name: Abraham Kehinde Joshua
Matric No: ESM/2016/001
Course Code: SVG 513 (Geospatial Planning and Management)
Title of Proposed Project: Accuracy Assessment of Geoidal Height Determination from Earth
Gravity Models of Part of Obafemi Awolowo University, Ile-Ife.
Thematic Area: Part Obafemi Awolowo University, Ile-Ife.
Background to the Project: geoid is an equipotential surface that coincide with the mean sea
level. It is defined as the equipotential surface of the earth’s gravity field which best fits in the
least square sense; the mean sea level. The geoid undulation or geoidal height is the height of the
geoid relative to a given reference ellipsoid. The geoid height (N) is the difference of the vertical
distance between the reference geoid and the ellipsoid. This study will also create the
opportunity to know the efficiency and performance of applying earth gravity models as a
plausible practical alternative technology to the traditional geometric method in estimating
geoidal heights. It could also improve the general accuracy method in topographic mapping and
three-dimensional (3D) coordinate transformation.
This study will create the opportunity for geospatial practitioners in developing countries like
Nigeria to arrive at a consensus on the most appropriate alternative technique applicable for
estimating local geoid heights within the local geodetic reference network.
Aim and Objectives
The aim of this study is to access the accuracy of geoidal height determination from earth
gravity models for part of Obafemi Awolowo University, Ile-Ife.
Matric No: ESM/2016/001
Course Code: SVG 513 (Geospatial Planning and Management)
Title of Proposed Project: Accuracy Assessment of Geoidal Height Determination from Earth
Gravity Models of Part of Obafemi Awolowo University, Ile-Ife.
Thematic Area: Part Obafemi Awolowo University, Ile-Ife.
Background to the Project: geoid is an equipotential surface that coincide with the mean sea
level. It is defined as the equipotential surface of the earth’s gravity field which best fits in the
least square sense; the mean sea level. The geoid undulation or geoidal height is the height of the
geoid relative to a given reference ellipsoid. The geoid height (N) is the difference of the vertical
distance between the reference geoid and the ellipsoid. This study will also create the
opportunity to know the efficiency and performance of applying earth gravity models as a
plausible practical alternative technology to the traditional geometric method in estimating
geoidal heights. It could also improve the general accuracy method in topographic mapping and
three-dimensional (3D) coordinate transformation.
This study will create the opportunity for geospatial practitioners in developing countries like
Nigeria to arrive at a consensus on the most appropriate alternative technique applicable for
estimating local geoid heights within the local geodetic reference network.
Aim and Objectives
The aim of this study is to access the accuracy of geoidal height determination from earth
gravity models for part of Obafemi Awolowo University, Ile-Ife.
