Results 1 to 10 of about 914 (138)
A new combined quasigeoid model in Tierra del Fuego [PDF]
Geologica Acta, 2014 This work focuses on the development of a combined quasigeoid model for Tierra del Fuego province. The Equivalent Source Technique (EST) is applied together with the remove-compute-restore technique in order to combine gravity and GPS/levelling ...
M.E. GOMEZ +3 more
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On the Consistency between a Classical Definition of the Geoid-to-Quasigeoid Separation and Helmert Orthometric Heights [PDF]
Sensors, 2023 It is acknowledged that a classical definition of the geoid-to-quasigeoid separation as a function of the simple planar Bouguer gravity anomaly is compatible with Helmert’s definition of orthometric heights.
Robert Tenzer, Albertini Nsiah Ababio
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A New Model of Quasigeoid for the Baltic Sea Area [PDF]
Remote Sensing, 2021 The Space Research Centre in Warsaw is participating in the ESA project “Geodetic SAR for Height System Unification and Sea Level Research”. To observe the absolute sea level and enable the unification of the height systems, the physical heights of the ...
Adam Lyszkowicz +3 more
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The Use of Quasigeoid in Leveling Through Terrain Obstacles [PDF]
Reports on Geodesy and Geoinformatics, 2017 In these paper are presented two ways of performing leveling through terrain obstacles. They use properties of the quasigeoid course with respect to the ellipsoid within a given area.
Banasik Piotr, Bujakowski Kazimierz
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A high-resolution gravimetric quasigeoid model for Vietnam
Earth, Planets and Space, 2019 A high-resolution gravimetric quasigeoid model for Vietnam and its surrounding areas was determined based on new gravity data. A set of 29,121 land gravity measurements was used in combination with fill-in data where no gravity data existed.
Dinh Toan Vu +2 more
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ON THE COMPUTATION OF A PRECISE GEOID – TO – QUASIGEOID SEPARATION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 In geodesy, orthometric and normal heights are considered as basic height systems on the earth. The reference surfaces for these heights are the geoid and quasigeoid respectively.
S. Hejrati, M. Najafi-Alamdari
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Geoid versus quasigeoid: a case of physics versus geometry
Contributions to Geophysics and Geodesy, 2012 For decades now the geodetic community has been split down the middle over the question as to whether geoid or quasigeoid should be used as a reference surface for heights.
Petr VANÍČEK +2 more
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Quasigeoid computation in the Nordic and Baltic region
Journal of Geodetic ScienceAbstract The Nordic and Baltic Sea region is topographically varied, making gravity potential field modelling in the region a challenge. With new gravity data in and around the Baltic Sea, this study investigates improvements in the accuracy of quasigeoid determination in the region.
Teitsson Hergeir +3 more
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Rigorous geoid-from-quasigeoid correction using gravity disturbances
Journal of Geodetic Science, 2015 We present rigorous solutions for the geoid-fromquasigeoid correction (GQC) using Taylor expansions of surface gravity disturbances along the vertical from the Earth’s surface to the geoid.
Sjöberg Lars
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Determination of the Geoid–Quasigeoid Separation Using GGI Method
Remote SensingThe determination of the geoid–quasigeoid separation (GQS) is most often based on the use of Bouguer gravity anomalies or disturbances with additional corrections, which allow for the determination of so-called complete or accurate GQS values. This study
Marek Trojanowicz +2 more
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