Ionospheric tomography for SWARM satellite orbit determination using single-frequency GNSS data

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFinnish Geospatial Research Institute (FGI)-
Autor(es): dc.contributorUniversity of Vaasa-
Autor(es): dc.contributorIstituto Nazionale di Geofisica e Vulcanologia (INGV)-
Autor(es): dc.contributorLudwig Maximilian University of Munich (LMU)-
Autor(es): dc.contributorGFZ German Research Centre for Geosciences-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorGerman Aerospace Center (DLR)-
Autor(es): dc.creatorProl, Fabricio S.-
Autor(es): dc.creatorPignalberi, Alessio-
Autor(es): dc.creatorSmirnov, Artem-
Autor(es): dc.creatorPezzopane, Michael-
Autor(es): dc.creatorChristovam, Ana L.-
Autor(es): dc.creatorSelvan, Kannan-
Autor(es): dc.creatorHoque, Mainul-
Autor(es): dc.creatorKaasalainen, Sanna-
Data de aceite: dc.date.accessioned2025-08-21T20:44:00Z-
Data de disponibilização: dc.date.available2025-08-21T20:44:00Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10291-024-01779-4-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298242-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298242-
Descrição: dc.descriptionIonospheric tomography offers three-dimensional (3D) description of the electron density distribution, enabling the direct incorporation of electron density data into the slant total electron content (STEC) computation. As a result, STEC derived from tomography helps mitigate the ionospheric delay experienced in the line of sight between global navigation satellite systems (GNSS) and satellites positioned in low Earth orbits (LEO). Tomography can therefore be effectively employed to correct single-frequency GNSS observations and allow enhanced positioning of spaceborne platforms. We demonstrate the accuracy and performance of a global-scale ionospheric tomography method for determining satellite orbits, utilizing single-frequency GNSS measurements combined with a precise point positioning (PPP) algorithm. We compare the tomographic outcomes against orbit determination derived from the GRoup and PHase ionospheric correction (GRAPHIC) observable and based on an ionospheric climatological model. Near the peak of solar cycle 24, the overall accuracy achieved with tomography was around 3.8 m. notably, compared to the background climatological model, tomography demonstrated improvements ranging from 15 to 20%. The GRAPHIC method outperformed tomography, achieving an accuracy of 0.7 m, whereas we obtained around 7 m accuracy when no ionospheric model is employed. Although the developed ionospheric tomography has yet to match the precision of GRAPHIC, our results bring us relatively closer to this objective.-
Descrição: dc.descriptionDepartment of Navigation and Positioning Finnish Geospatial Research Institute (FGI)-
Descrição: dc.descriptionSchool of Technology and Innovations University of Vaasa, Wolffintie 32-
Descrição: dc.descriptionIstituto Nazionale di Geofisica e Vulcanologia (INGV), Via di Vigna Murata 605-
Descrição: dc.descriptionDepartment of Earth and Environmental Sciences Ludwig Maximilian University of Munich (LMU), Theresienstraße 41-
Descrição: dc.descriptionHelmholtz Centre Potsdam GFZ German Research Centre for Geosciences-
Descrição: dc.descriptionDepartment of Cartography São Paulo State University (UNESP), Presidente Prudente-
Descrição: dc.descriptionInstitute for Solar-Terrestrial Physics German Aerospace Center (DLR), Kalkhorstweg 53-
Descrição: dc.descriptionDepartment of Cartography São Paulo State University (UNESP), Presidente Prudente-
Idioma: dc.languageen-
Relação: dc.relationGPS Solutions-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectGeomagnetic storm-
Palavras-chave: dc.subjectGPS-
Palavras-chave: dc.subjectGRAPHIC-
Palavras-chave: dc.subjectIonosphere-
Palavras-chave: dc.subjectLow earth orbit-
Palavras-chave: dc.subjectSwarm-
Palavras-chave: dc.subjectTomography-
Título: dc.titleIonospheric tomography for SWARM satellite orbit determination using single-frequency GNSS data-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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