Results 11 to 20 of about 173 (112)
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
doaj +2 more sources
A new combined quasigeoid model in Tierra del Fuego
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
doaj +8 more sources
Journal of Geodetic Science, 2012 We evaluate the new regional quasigeoid model (OTG12) for New Zealand using the method which utilises the discretised integral equation approach for computing the near-zone contribution.
Robert Tenzer, Ahmed Abdalla
exaly +2 more sources
Gravimetric Model of Quasigeoid in the Area of Slovakia [PDF]
Acta Montanistica Slovaca, 2005 The gravimetric model of quasigeoid in the area of Slovakia was determined by using the revised and homogenised gravity mapping data in the scale of 1:25 000 from the area of Slovakia, and by using the mean Bouguer gravity anomalies with the resolution ...
Juraj Papčo +2 more
doaj +1 more source
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
exaly +3 more sources
Kakovost določitve nadmorskih višin z GNSS-višinomerstvom na območju Ljubljane (= Quality determination of mean sea level heights with GNSS levelling on the Ljubljana city area) [PDF]
Geodetski Vestnik, 2021 This paper describes the quality determination of heights above mean sea level using RTK GNSS-levelling and new height reference surface SLO_VRP2016/Koper on the city area of Ljubljana.
Miran Kuhar, Robert Brglez, Božo Koler
doaj +1 more source
Review of the Research Progress on Static Earth Gravity Field and Vertical Datum in China during 2019—2023 [PDF]
Journal of Geodesy and Geoinformation Science, 2023 The contribution presents the representative research progress on global static gravity field modeling, regional geoid/quasigeoid determination, vertical datum study, as well as the theory, algorithm and software for gravity field study in China from ...
Tao JIANG, Xinyu XU, Yonghai CHU, Taoyong JIN, Wei LIANG, Yihao WU, Yanguang FU, Yongqi ZHAO, Xinwei GUO
doaj +1 more source
Journal of Geodetic Science, 2023 New gravity and precise levelling measurements have been performed throughout the Hong Kong territories to modernize a vertical geodetic datum that is currently realized by heights of levelling benchmarks defined in the Hong Kong Principal Datum (HKPD ...
Čunderlík Robert +5 more
doaj +1 more source
The Photogrammetric Record, Volume 37, Issue 179, Page 285-305, September 2022., 2022 This paper aims to study and quantify the induced error due to the deflection of verticals (DOV) when integrating different sensors, focusing on GNSS and INS for 3D mapping in airborne mapping. It is shown that the DOV effect should be considered for direct georeferencing because the DOV components are in the order of (or larger than) INS uncertainty ...
Mohammad Bagherbandi +3 more
wiley +1 more source
Estimation of vertical datum offset for the South African vertical datum, in relation to the international height reference system [PDF]
Geodetski Vestnik, 2021 The vertical offset and the geopotential value over South Africa is estimated on the four fundamental benchmarks in relation to the international height reference system (IHRS).
Matthews Siphiwe Mphuthi +1 more
doaj +1 more source