Results 1 to 10 of about 977,590 (212)

Estimation of vertical datum offset for the South African vertical datum, in relation to the international height reference system [PDF]

open access: yesGeodetski 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   +5 more sources

Analysis of a Relative Offset between the North American and the Global Vertical Datum in Gravity Potential Space

open access: yesRemote 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
exaly   +4 more sources

On the connection of the Ecuadorian Vertical Datum to the IHRS

open access: yesJournal of Geodetic Science, 2023
In this work, the determination of the discrepancy between the Ecuadorian Vertical Datum (EVD) and the International Height Reference System (IHRS) is presented.
Riccardo BARZAGHI
exaly   +4 more sources

Estimation of Geopotential Value W0 for the Geoid and Local Vertical Datum Parameters

open access: yesRemote 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   +2 more sources

Estimation of Vertical Datum Parameters Using the GBVP Approach Based on the Combined Global Geopotential Models

open access: yesRemote Sensing, 2020
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 a unified vertical datum system is to determine the vertical offset between the local vertical datum and the global ...
Panpan Zhang   +7 more
doaj   +2 more sources

Elevation uncertainties in the Mekong Delta quantified using a transferable approach. [PDF]

open access: yesSci Rep
The elevation of coastal lowlands relative to local sea level is a crucial determinant for their exposure and is key input for coastal hazard and relative sea-level rise impact assessments.
Seeger K, Minderhoud PSJ.
europepmc   +2 more sources

Estimating Canadian vertical datum offsets using GNSS/levelling benchmark information and GOCE global geopotential models

open access: yesJournal of Geodetic Science, 2012
The performance of GOCE-based geopotential models is assessed for the estimation of offsets for three regional vertical datums in Canada with respect to a global equipotential surface using the GNSS benchmarks from the first-order vertical control ...
Hayden T.   +3 more
exaly   +2 more sources

How Significant is the Dynamic Component of the North American Vertical Datum?

open access: yesJournal of Geodetic Science, 2012
One of the main current geodetic activities in North America is the definition and establishment of a geoid-based vertical datum that will replace the official CGVD28 and NAVD88 datums in Canada and the USA, respectively.
Wouter van der Wal
exaly   +2 more sources

Review of the Research Progress on Static Earth Gravity Field and Vertical Datum in China during 2019—2023 [PDF]

open access: yesJournal 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

Accuracy assessment of quasi-seamless hydrographic separation models in Malaysian waters

open access: yesFrontiers 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

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