Forward gravity field modelling requires high accurate determination of the topographic
potential on the surface of the Earth's ellipsoid. Since the topography is recently known with …

The traditional remove-restore technique for geoid computation suffers from two main
drawbacks. The first is the assumption of an isostatic hypothesis to compute the …

In the framework of the IAG African Geoid Project, an attempt towards a precise geoid model
for Africa is presented in this investigation. The available gravity data set suffers from …

In modern geodesy, the geoid computation is carried out using the so-called remove-restore
technique. In this technique, the effect of the topography and its isostatic compensation as …

In the framework of the remove-restore technique, the residual field should be, more or less,
unbiased and have a small variance. Hence, a high-degree reference geopotential model …

The primary task of the IAG Sub-Commission on Gravity and Geoid in Africa is the
development of the vertical reference surface (the geoid) for the entire African continent. For …

The paper presents an attempt to compute a geoid model for Africa in the framework of the
IAG African Geoid Project. The available gravity data set consists of land point gravity data …

An optimal procedure to merge all currently available free-air gravity anomalies in Egypt and
neighbouring countries (both on land and sea) has been carried out. As a result, we obtain a …

The gravity database for the IAG African Geoid Project contains significantly large data gaps.
These large data gaps affect the interpolation precision of the reduced gravity anomalies …

The window technique was suggested earlier to get rid of the double consideration of the
topographic-isostatic masses within the data window in the framework of the remove-restore …