Results 1 to 10 of about 122,694 (252)

Determining the new height of Mount Qomolangma based on the International Height Reference System

Geo-spatial Information Science, 2023
To achieve the goal that China and Nepal jointly announce the new height of Mount Qomolangma (MQ), the campaign of Qomolangma Height Survey (QHS) was carried out from 2019 to 2020.
Yamin Dang, Tao Jiang, Chunxi Guo, Bin Chen, Chuanyin Zhang, Qiang Yang, Zhengtao Wang   +6 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, Patroba Achola Odera   +1 more
doaj   +3 more sources

Development and evolution of height systems in the context of SIRGAS: From the local vertical data to the International height reference frame

Journal of Geodetic Science, 2023
Abstract In America, height systems were established during the twentieth century by connecting the leveling network to a tide gauge. In 1997, the Geodetic Reference System for the Americas (former Geocentric Reference System for South America) created Working Group III, called Vertical Datum, to assist in establishing a unified vertical
Inoue Mariana, Guimarães Gabriel
doaj   +2 more sources

Analysis of high-resolution global gravity field models for the estimation of International Height Reference System (IHRS) coordinates in Argentina

Journal of Geodetic Science, 2022
Following the definition and realization of the International Height Reference System (IHRS), the vertical coordinate of a given point at the Earth’s surface can be obtained from the computation of the geopotential value from a harmonic expansion of a ...
Tocho Claudia N., Antokoletz Ezequiel D., Gómez Agustín R., Guagni Hernán, Piñon Diego A.   +4 more
doaj   +3 more sources

A first step towards a national realisation of the international height reference system in Sweden with a comparison to RH 2000

Journal of Geodetic Science, 2023
The International Height Reference System (IHRS) was defined by the International Association of Geodesy in 2015. Since then, the international geodetic community has been working on the specification and establishment of its realisation, the ...
Alfredsson Anders, Ågren Jonas
doaj   +4 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

The significance of determination of the absolute value of gravity in geodesy [PDF]

Tehnika, 2021
The gravity is used to solve geodesy's primary tasks, such as determining geoid and defining the height and gravimetric reference networks of different scales, from national to global.
Naod Sofija M.
doaj   +1 more source

Strategy for the realisation of the International Height Reference System (IHRS) [PDF]

Journal of Geodesy, 2021
AbstractIn 2015, the International Association of Geodesy defined the International Height Reference System (IHRS) as the conventional gravity field-related global height system. The IHRS is a geopotential reference system co-rotating with the Earth. Coordinates of points or objects close to or on the Earth’s surface are given by geopotential numbersC ...
Sánchez, Laura, Ågren, Jonas, Huang, Jianliang, Wang, Yan Ming, Mäkinen, Jaakko, Pail, Roland, Barzaghi, Riccardo, Vergos, Georgios S., Ahlgren, Kevin, Liu, Qing, Sánchez, Laura; Deutsches Geodätisches Forschungsinstitut (DGFI-TUM), Technical University of Munich, Munich, Germany, Ågren, Jonas; KTH, Royal Institute of Technology, Stockholm, Sweden, Huang, Jianliang; Canadian Geodetic Survey, Surveyor General Branch, Natural Resources Canada, Ottawa, Canada, Wang, Yan Ming; National Geodetic Survey, Silver Spring, USA, Mäkinen, Jaakko; Finnish Geospatial Research Institute, Masala, Finland, Pail, Roland; Institute of Astronomical and Physical Geodesy, Technical University of Munich, Munich, Germany, Barzaghi, Riccardo; Department of Civil and Environmental Engineering, Politecnico Di Milano, Milano, Italy, Vergos, Georgios S.; Department of Geodesy and Surveying, Laboratory of Gravity Field Research and Applications, Aristotle University of Thessaloniki, Thessaloniki, Greece, Ahlgren, Kevin; National Geodetic Survey, Silver Spring, USA, Liu, Qing; Deutsches Geodätisches Forschungsinstitut (DGFI-TUM), Technical University of Munich, Munich, Germany   +19 more
openaire   +8 more sources

O Estabelecimento do IHRF no Brasil: Situação Atual e Perspectivas Futuras

Revista Brasileira de Cartografia, 2022
O estudo e a compreensão dos aspectos geodinâmicos no planeta requerem referenciais geodésicos globais com uma ordem de acurácia melhor do que a magnitude dos efeitos e com confiabilidade.
Gabriel do Nascimento Guimarães, Denizar Blitzkow, Ana Cristina Oliveira Cancoro de Matos, Valéria Cristina Silva, Mariana Eiko Borba Inoue   +4 more
doaj   +1 more source

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, Flores Fredy, Rodríguez Freddy, Pozo Miguel   +3 more
doaj   +1 more source