Evaluation of recent combined global geopotential models in Brazil [PDF]
Journal of Geodetic Science, 2018 The aim of this paper is to present a quantitative analysis of the adequacy of the main currently existing combined Global Geopotential Models (GGMs) for modeling normal-geoid heights throughout Brazil.
Nicacio E. +2 more
doaj +4 more sources
Improvement of GOCE-Based Global Geopotential Models for Gravimetric Geoid Modeling in Turkey [PDF]
Geosciences, 2022 This study investigates the contribution of global geopotential models which are calculated with GOCE satellite mission data to the improvement of gravimetric geoid models in Turkey.
Mustafa Serkan Isik +3 more
doaj +5 more sources
On global and regional spectral evaluation of global geopotential models [PDF]
Journal of Geophysics and Engineering, 2010 Spectral evaluation of global geopotential models (GGMs) is necessary to recognize the behaviour of gravity signal and its error recorded in spherical harmonic coefficients and associated standard deviations. Results put forward in this wise explain the whole contribution of gravity data in different kinds that represent various sections of the gravity
Aydin Ustun
exaly +6 more sources
Geoid Studies in Two Test Areas in Greece Using Different Geopotential Models towards the Estimation of a Reference Geopotential Value [PDF]
Remote Sensing, 2023 In the present study, we first examine the contribution of different, satellite-only or combined, global geopotential models in geoid computation employing the remove–compute–restore approach. For this reason, two test areas of about 100 km2 each, one in
Vassilios N. Grigoriadis +4 more
doaj +4 more sources
An Evaluation of Recent Global Geopotential Models for Strip Area Project in Turkey [PDF]
Earth Sciences Research Journal, 2016 The aim of this study is to present the evaluations based on comparisons of geoid heights that are computed from several global geopotential models (GGMs) and the GNSS/levelling data.
Serkan Doganalp
doaj +6 more sources
Global Geopotential Models assessment in Ecuador based on geoid heights and geopotential values
Journal of Geodetic Science, 2023 Since the 1960s, the analysis of disturbed satellite orbits to infer Earth’s gravity field functionals has been an important element in determining the Earth’s gravitational field. The long wavelengths of the gravitational field are recovered through the
Carrión José +3 more
doaj +2 more sources
Evaluation of normal heights by the means of global navigation satellite systems and global geopotential model [PDF]
Glasnik Srpskog Geografskog Društva, 2015 This paper presents geometrically and physically defined height systems, along with their evaluation by the means of Global Navigation Satellite Systems (GNSS) and Global Geopotential Models (GGM).
Odalović Oleg +4 more
doaj +4 more sources
Determination of deflection of the vertical components by using global geopotential model EGM2008 [PDF]
Tehnika, 2018 This paper presents the determination of the vertical deflection components using the Global Geopotential Model EGM2008. The components are defined in two groups of points: 4083 points are relatively correctly distributed across the territory of Serbia ...
Odalović Oleg R. +4 more
doaj +3 more sources
Assessment of recent GOCE-based global geopotential models and EGM2008 in Niger Republic
Geodesy and Cartography, 2019 In this study, we assessed recent GOCE-based Global Geopotential Models (GGMs) and EGM2008 in Niger. The combined GGMs EIGEN_6C4, GECO and EGM2008 were evaluated up to their maximum degree and order (d/o) 2,190 to select the one for gravity database ...
Salissou Ibrahim Yahaya, Driss El Azzab
doaj +3 more sources
Evaluation of Selected Global Geopotential Models for Regional Applications in Nigeria
Nova GeodesiaThe advent of Global Navigation Satellite Systems (GNSS) has significantly advanced geomatics by facilitating efficient data acquisition. However, deriving accurate orthometric heights from GNSS-based ellipsoidal heights remains challenging ...
Lukman Abdulmumin +2 more
doaj +2 more sources