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Evaluation of global geopotential models in determining the quasi-geoid for Southern Africa
Survey Review, 2007Precise geoid models are needed to enable GPS-derived heights to be converted to the local height datum. A major component of these models is a global geopotential model. Several candidate models are assessed in the context of forming the basis for a regional quasi-geoid for Southern Africa. These candidates include the EGM96 and models based upon data
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Evaluation of Gravity Anomaly and Geoid Height Derived from Various Global Geopotential Model [PDF]
, 2021 There are 177 global geopotential models (GGM) that have been published in the International Centre for Global Earth Model (ICGEM). All geopotential models can be evaluated to determine the best-fit geoid model for each place.
Kasenda Olesen, Adolfientje +3 more
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Verification of heights above global mean sea level from high-degree global geopotential models by using leveling data [PDF]
Journal of Applied Geodesy, 2011 The dedicated satellite gravity missions CHAllenging Minisatellite Payload (CHAMP), Gravity Recovery and Climate Experiment (GRACE), and Gravity field and steady-state Ocean Circulation Explorer (GOCE) and their recent and expected Global Geopotential ...
Aydin Ustun
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Evaluation of global geopotential models: a case study for India
Survey Review, 2018This paper aims to identify most suitable global geopotential model (GGM) for India, by comparing 15 GGMs developed through 1996 to 2017.
Ropesh Goyal +2 more
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Evaluation and comparision recent global geopotential model in Serbia
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2013Within this paper the evaluation and comparison test of a series of global geopotential models (GGM) is shown using available terrestrial data from the territory of Serbia. Using the model of European Improved Gravity 6C2 (EIGEN-6C2), then the model of Gravity Observation Combination 02S N 03S (GCCO02S and GCCO03S) as well as the model of the Earth ...
Odalović, Oleg +2 more
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Comparison of Satellite Altimetric Gravity and Global Geopotential Models with Shipborne Gravity in the Red Sea [PDF]
Marine Geodesy, 2018 The determination of high-resolution geoid for marine regions requires the integration of gravity data provided by different sources, e.g. global geopotential models, satellite altimetry, and shipborne gravimetric observations.
Ahmed Zaki +2 more
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Spectral analysis of block averaged data in geopotential global model determination
Journal of Geodesy, 1995The recovery of the harmonic coefficients of the anomalous potential from a geodetic quantity sampled over a regular grid is affected by the non-exact discrete orthogonality of spherical harmonics; larger errors occur for block-average quantities owing to the non-simple behaviour of the block-average operator when applied to spherical harmonics ...
A. ALBERTELLA, SACERDOTE, FAUSTO
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Accuracy Estimates of Geopotential Models and Global Geoids
1996The authors have developed a theoretical Geopotential Model Testing (GMT) methodology and applied it to existing data. The GMT method was developed without hypothesis regarding the geoid or the internal mass distribution of the Earth. The testing accuracy is limited only by the observational errors at the testing sites.
Kenneth F. Burke +3 more
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Rigorous evaluation of global geopotential models for geoid modelling: A case study in Kenya
Journal of African Earth Sciences, 2022Developing a gravimetric geoid model requires gravity data covering the whole surface of the earth. In practice, terrestrial data within a spherical cap is used, causing a truncation error, which may be minimised if the terrestrial data is combined with a Global Geopotential Model (GGM). The choice of a GGM that fits the observed terrestrial data best,
Chivatsi Jonathan Nyoka +3 more
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Evaluation of Recent Global Geopotential Models in Argentina
2010Recent Earth Geopotential Models (EGMs) represent a great improvement to several applications related to gravity field modeling. These models offer higher accuracy and better resolution of the gravity field.
A. Pereira, M. C. Pacino
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