A new gravimetric geoid model for Sudan using the KTH method

A Abdalla, D Fairhead - Journal of African earth sciences, 2011 - Elsevier
Sudan is characterized by vast area with flat terrains in most of the country's regions and
therefore the existence of a high-resolution geoid model is considered very important …

Regional geoid determination methods for the era of satellite gravimetry: numerical investigations using synthetic earth gravity models

J Ågren - 2004 - diva-portal.org
It is the purpose of this thesis to investigate different regional geoid determination methods
with respect to their feasibility for use with a future GOCE satellite-only Earth Gravity Model …

Geoid modeling by the least squares modification of Hotine's and Stokes' formulae using non-gridded gravity data

FF Sakil, S Erol, A Ellmann, B Erol - Computers & Geosciences, 2021 - Elsevier
The paper deals with geoid modeling using the least-squares modification of the Stokes' and
Hotine's formulae using gridded and non-gridded terrestrial gravity data over the Auvergne …

Computation of three stochastic modifications of Stokes's formula for regional geoid determination

A Ellmann - Computers & geosciences, 2005 - Elsevier
In the regional geoid studies, the modified Stokes formula is often used nowadays. This
method combines local terrestrial data with an appropriate global geopotential model in a …

Compilation of the new detailed geoid model HKGEOID-2022 for the Hong Kong territories

A Nsiah Ababio, R Tenzer - Marine Geodesy, 2022 - Taylor & Francis
Abstract Number of detailed geoid models have been developed to convert geodetic heights
measured by the Global Navigation Satellite Systems (GNSS) to heights in the Hong Kong …

Two deterministic and three stochastic modifications of Stokes's formula: a case study for the Baltic countries

A Ellmann - Journal of Geodesy, 2005 - Springer
In regional gravimetric geoid determination, it is customary to use the modified Stokes
formula that combines local terrestrial data with a global geopotential model. This study …

The evaluation of the New Zealand's geoid model using the KTH method

A Abdalla, R Tenzer - Geodesy and Cartography, 2011 - Taylor & Francis
We compile a new geoid model at the computation area of New Zealand and its continental
shelf using the method developed at the Royal Institute of Technology (KTH) in Stockholm …

Using particle swarm optimization to establish a local geometric geoid model

SP Kao, FS Ning, CN Chen, CL Chen - Boletim de Ciências …, 2017 - SciELO Brasil
There exist a number of methods for approximating the local geoid surface and studies
carried out to determine a local geoid. In this study, performance of geoid by PSO method in …

[PDF][PDF] Gravity anomaly field over Estonia

T Oja, A Ellmann, S Märdla - estonian Journal of earth sciences, 2019 - kirj.ee
Different gravity reference frames, methods and instruments have been used by several
institutions for conducting gravimetric measurements in Estonia within the past 70 years …

A user-friendly software package for modelling gravimetric geoid by the classical Stokes-Helmert method

RA Abbak, R Goyal, A Ustun - Earth Science Informatics, 2024 - Springer
With the progress in Global Navigation Satellite Systems (GNSS) technology, accurate geoid
modelling has started to play an essential role in geodetic applications such as establishing …