The contribution of South American VGOS sites to EOP and reference frames determination

Autores
Gomez, María Eugenia; Fernández, Laura Isabel; Hase, H.
Año de publicación
2025
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
We analyzed the impact of different network configurations with VGOS antennas. Up to 2025, the inhomogeneous distribution of Very Long Baseline Interferometry (VLBI) sites with VGOS technology shows more VGOS antennas in the Northern than in the Southern hemisphere. We simulated additional VGOS sites in South America and studied their impact on Earth Orientation Parameters (EOP), as well as station and source coordinates. The selection of fictitious sites was made on the presence of existent and needed infrastructure. Different fictitious network configurations were compared by their performance with respect to the real situation. It was concluded that a more uniform distribution with additional sites in South America would significantly improve the EOP and source coordinates, but not on station coordinates.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
VGOS network optimization
Earth Orientation Parameters (EOP)
Southern Hemisphere VLBI expansion
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/192002
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/192002
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network_name_str SEDICI (UNLP)
spelling The contribution of South American VGOS sites to EOP and reference frames determinationGomez, María EugeniaFernández, Laura IsabelHase, H.Ciencias AstronómicasVGOS network optimizationEarth Orientation Parameters (EOP)Southern Hemisphere VLBI expansionWe analyzed the impact of different network configurations with VGOS antennas. Up to 2025, the inhomogeneous distribution of Very Long Baseline Interferometry (VLBI) sites with VGOS technology shows more VGOS antennas in the Northern than in the Southern hemisphere. We simulated additional VGOS sites in South America and studied their impact on Earth Orientation Parameters (EOP), as well as station and source coordinates. The selection of fictitious sites was made on the presence of existent and needed infrastructure. Different fictitious network configurations were compared by their performance with respect to the real situation. It was concluded that a more uniform distribution with additional sites in South America would significantly improve the EOP and source coordinates, but not on station coordinates.Facultad de Ciencias Astronómicas y Geofísicas2025-08info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf59-59http://sedici.unlp.edu.ar/handle/10915/192002enginfo:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/190232info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-03-26T09:21:46Zoai:sedici.unlp.edu.ar:10915/192002Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-03-26 09:21:47.02SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The contribution of South American VGOS sites to EOP and reference frames determination
title The contribution of South American VGOS sites to EOP and reference frames determination
spellingShingle The contribution of South American VGOS sites to EOP and reference frames determination
Gomez, María Eugenia
Ciencias Astronómicas
VGOS network optimization
Earth Orientation Parameters (EOP)
Southern Hemisphere VLBI expansion
title_short The contribution of South American VGOS sites to EOP and reference frames determination
title_full The contribution of South American VGOS sites to EOP and reference frames determination
title_fullStr The contribution of South American VGOS sites to EOP and reference frames determination
title_full_unstemmed The contribution of South American VGOS sites to EOP and reference frames determination
title_sort The contribution of South American VGOS sites to EOP and reference frames determination
dc.creator.none.fl_str_mv Gomez, María Eugenia
Fernández, Laura Isabel
Hase, H.
author Gomez, María Eugenia
author_facet Gomez, María Eugenia
Fernández, Laura Isabel
Hase, H.
author_role author
author2 Fernández, Laura Isabel
Hase, H.
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
VGOS network optimization
Earth Orientation Parameters (EOP)
Southern Hemisphere VLBI expansion
topic Ciencias Astronómicas
VGOS network optimization
Earth Orientation Parameters (EOP)
Southern Hemisphere VLBI expansion
dc.description.none.fl_txt_mv We analyzed the impact of different network configurations with VGOS antennas. Up to 2025, the inhomogeneous distribution of Very Long Baseline Interferometry (VLBI) sites with VGOS technology shows more VGOS antennas in the Northern than in the Southern hemisphere. We simulated additional VGOS sites in South America and studied their impact on Earth Orientation Parameters (EOP), as well as station and source coordinates. The selection of fictitious sites was made on the presence of existent and needed infrastructure. Different fictitious network configurations were compared by their performance with respect to the real situation. It was concluded that a more uniform distribution with additional sites in South America would significantly improve the EOP and source coordinates, but not on station coordinates.
Facultad de Ciencias Astronómicas y Geofísicas
description We analyzed the impact of different network configurations with VGOS antennas. Up to 2025, the inhomogeneous distribution of Very Long Baseline Interferometry (VLBI) sites with VGOS technology shows more VGOS antennas in the Northern than in the Southern hemisphere. We simulated additional VGOS sites in South America and studied their impact on Earth Orientation Parameters (EOP), as well as station and source coordinates. The selection of fictitious sites was made on the presence of existent and needed infrastructure. Different fictitious network configurations were compared by their performance with respect to the real situation. It was concluded that a more uniform distribution with additional sites in South America would significantly improve the EOP and source coordinates, but not on station coordinates.
publishDate 2025
dc.date.none.fl_str_mv 2025-08
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Resumen
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/192002
url http://sedici.unlp.edu.ar/handle/10915/192002
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/190232
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
59-59
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instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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