Results 1 to 10 of about 32,946 (237)
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
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The permanent tide and the International Height Reference Frame IHRF [PDF]
Journal of Geodesy, 2021 AbstractThe International Height Reference System (IHRS), adopted by International Association of Geodesy (IAG) in its Resolution No. 1 at the XXVI General Assembly of the International Union of Geodesy and Geophysics (IUGG) in Prague in 2015, contains two novelties. Firstly, the mean-tide concept is adopted for handling the permanent tide.
J. Mäkinen
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Towards an International Height Reference Frame Using Clock Networks [PDF]
International Association of Geodesy Symposia, 2020 AbstractEstablishing an International Height Reference Frame (IHRF) has been a major goal of the International Association of Geodesy (IAG) for a long time. One challenge is to obtain the vertical coordinates, i.e., geopotential numbers, of the reference stations with high precision and global consistency.
Wu, Hu, Müller, Jürgen
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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
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Towards the Realization of the International Height Reference Frame (IHRF) in Argentina [PDF]
International Association of Geodesy Symposia, 2020 AbstractThis paper describes a practical implementation of the International Height Reference System (IHRS) in Argentina. The contribution deals with the determination of potential values W(P) at five Argentinean stations proposed to be included in the reference network of the International Height Reference Frame (IHRF). All sites are materialized with
Cláudia Tocho +2 more
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Impact of terrestrial reference frame realizations on altimetry satellite orbit quality and global and regional sea level trends: a switch from ITRF2008 to ITRF2014 [PDF]
Solid Earth, 2019 A terrestrial reference frame (TRF) is a basis for precise orbit determination of Earth-orbiting satellites, since it defines positions and velocities of stations, the tracking data of which are used to derive satellite positions.
S. Rudenko +4 more
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Application of time series modeling to a national reference frame realization
Geodesy and Geodynamics, 2018 This paper presents an option for modern dynamic terrestrial reference system realization in Uzbekistan for user needs. An additive model is explored to predict patterns of time series and investigate means of constructing forecast time series models in ...
D. Fazilova, Sh. Ehgamberdiev, S. Kuzin
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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 +4 more
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Advanced NO2 retrieval technique for the Brewer spectrophotometer applied to the 20-year record in Rome, Italy [PDF]
Earth System Science Data, 2021 A re-evaluated data set of nitrogen dioxide (NO2) column densities over Rome for the years 1996 to 2017 is here presented. This long-term record is obtained from ground-based direct sun measurements with a MkIV Brewer spectrophotometer (serial number ...
H. Diémoz +11 more
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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 +3 more
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