Results 1 to 10 of about 96,694 (223)
Vertical datum transformation grids for Mexico. [PDF]
Sci Data, 2020 AbstractMexico has used two vertical datums—the U.S. National Geodetic Vertical Datum of 1929 (NGVD29) and the North American Vertical Datum of 1988 (NAVD88). Because Mexico started using the NAVD88 as its vertical datum in 2015, most of Mexico’s data is referenced to the NGVD29 and recent high resolution data are referenced to the NAVD88.
Carrera-Hernández JJ.
europepmc +4 more sources
Preliminary Unification of Kronsztadt86 Local Vertical Datum with Global Vertical Datum [PDF]
Reports on Geodesy and Geoinformatics, 2015 The study concerns computation of the gravity potential difference between the Kronsztadt86 datum and the global vertical datum. This method is based on the use of ellipsoidal heights from satellite observations, normal heights obtained from the ...
Łyszkowicz Adam +2 more
doaj +2 more sources
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 +3 more sources
Remote Sensing, 2023 The accurate estimation of the zero-height geopotential level in a local vertical datum (LVD) is critical for linking traditional height reference systems to a global height system.
Dongmei Guo, Zhixin Xue
doaj +3 more sources
Uniciencia, 2004 La introducción de la metodología GPS en aplicaciones topográficas y geodésicas pone en notoria evidencia la clásica separación de sistemas de referencia en horizontal y vertical.
Esteban Dörries, Julio Roldán
doaj +2 more sources
Absolute vertical motion of the Amsterdam Ordnance Datum (NAP) [PDF]
Proceedings of the International Association of Hydrological Sciences, 2020 The backbone of the Amsterdam Ordnance Datum (NAP) is a network of about 400 primary subsurface markers. Relative movements between the primary subsurface markers are measured with spirit levelling once in 10–20 years.
R. Reudink +3 more
doaj +6 more sources
Regional geoid-model-based vertical datums – some Australian perspectives
Journal of Geodetic Science, 2012 This article summarises some considerations surrounding a geoid-model-based vertical datum that have to be thought through before its implementation and adoption.
Featherstone W. E. +5 more
doaj +3 more sources
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
Estimation of Geopotential Value W0 for the Geoid and Local Vertical Datum Parameters
Remote Sensing, 2023 Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for unifying the global vertical datum system is to determine the geopotential value W0 of the geoid and to calculate the ...
Xinyu Liu +4 more
doaj +1 more source
Accuracy assessment of quasi-seamless hydrographic separation models in Malaysian waters
Frontiers in Earth Science, 2023 The hydrographic survey reduction using ellipsoid has been available since the advent of the global navigation satellite system (GNSS), with a potential to streamline operation and enhance bathymetric output.
Mohammad Hanif Hamden +6 more
doaj +1 more source