Application of ionospheric corrections in the equatorial region for L1 GPS users

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dc.contributor.authorCamargo, Paulo De Oliveria [UNESP]
dc.contributor.authorMonico, João Francisco Galera [UNESP]
dc.contributor.authorFerreira, Luiz Danilo Damasceno
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionCentro Palitécnico-Jardim das Amérias
dc.date.accessioned2022-04-28T19:55:55Z
dc.date.available2022-04-28T19:55:55Z
dc.date.issued2000-01-01
dc.description.abstractIn the absence of the selective availability, which was turned off on May 1, 2000, the ionosphere can be the largest source of error in GPS positioning and navigation. Its effects on GPS observable cause a code delays and phase advances. The magnitude of this error is affected by the local time of the day, season, solar cycle, geographical location of the receiver and Earth's magnetic field. As it is well known, the ionosphere is the main drawback for high accuracy positioning, when using single frequency receivers, either for point positioning or relative positioning of medium and long baselines. The ionosphere effects were investigated in the determination of point positioning and relative positioning using single frequency data. A model represented by a Fourier series type was implemented and the parameters were estimated from data collected at the active stations of RBMC (Brazilian Network for Continuous Monitoring of GPS satellites). The data input were the pseudorange observables filtered by the carrier phase. Quality control was implemented in order to analyse the adjustment and to validate the significance of the estimated parameters. Experiments were carried out in the equatorial region, using data collected from dual frequency receivers. In order to validate the model, the estimated values were compared with ground truth. For point and relative positioning of baselines of approximately 100 km, the values of the discrepancies indicated an error reduction better than 80% and 50% respectively, compared to the processing without the ionospheric model. These results give an indication that more research has to be done in order to provide support to the L1 GPS users in the Equatorial region. Copy right© The Society of Geomagnetism and Earth, Planetary and Space Sciences (SGEPSS); The Seismological Society of Japan; The Volcanological Society of Japan; The Geodetic Society of Japan; The Japanese Society for Planetary Sciences.en
dc.description.affiliationDepartment of Cartography São Paulo State University 305 Centro Educational, Rua Roberta Simonsen, 19060-900 Presidente Prudente, SP
dc.description.affiliationDepartment of Geomatic Paraná Federal University Centro Palitécnico-Jardim das Amérias, 81531-990 Curitiba, PR
dc.description.affiliationUnespDepartment of Cartography São Paulo State University 305 Centro Educational, Rua Roberta Simonsen, 19060-900 Presidente Prudente, SP
dc.format.extent1083-1089
dc.identifierhttp://dx.doi.org/10.1186/bf03352335
dc.identifier.citationEarth, Planets and Space, v. 52, n. 11, p. 1083-1089, 2000.
dc.identifier.doi10.1186/bf03352335
dc.identifier.issn1880-5981
dc.identifier.issn1343-8832
dc.identifier.scopus2-s2.0-0038332289
dc.identifier.urihttp://hdl.handle.net/11449/224316
dc.language.isoeng
dc.relation.ispartofEarth, Planets and Space
dc.sourceScopus
dc.titleApplication of ionospheric corrections in the equatorial region for L1 GPS usersen
dc.typeArtigo

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