Accuracy assessment of Precise Point Positioning with multi-constellation GNSS data under ionospheric scintillation effects

dc.contributor.authorMarques, Haroldo Antonio
dc.contributor.authorMarques, Heloísa Alves Silva
dc.contributor.authorAquino, Marcio
dc.contributor.authorVeettil, Sreeja Vadakke
dc.contributor.authorMonico, João Francisco Galera [UNESP]
dc.contributor.institutionCartography Engineering Section
dc.contributor.institutionUniversity of Nottingham
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:18:11Z
dc.date.available2018-12-11T17:18:11Z
dc.date.issued2018-01-01
dc.description.abstractGPS and GLONASS are currently the Global Navigation Satellite Systems (GNSS) with full operational capacity. The integration of GPS, GLONASS and future GNSS constellations can provide better accuracy and more reliability in geodetic positioning, in particular for kinematic Precise Point Positioning (PPP), where the satellite geometry is considered a limiting factor to achieve centimeter accuracy. The satellite geometry can change suddenly in kinematic positioning in urban areas or under conditions of strong atmospheric effects such as for instance ionospheric scintillation that may degrade satellite signal quality, causing cycle slips and even loss of lock. Scintillation is caused by small scale irregularities in the ionosphere and is characterized by rapid changes in amplitude and phase of the signal, which are more severe in equatorial and high latitudes geomagnetic regions. In this work, geodetic positioning through the PPP method was evaluated with integrated GPS and GLONASS data collected in the equatorial region under varied scintillation conditions. The GNSS data were processed in kinematic PPP mode and the analyses show accuracy improvements of up to 60% under conditions of strong scintillation when using multi-constellation data instead of GPS data alone. The concepts and analyses related to the ionospheric scintillation effects, the mathematical model involved in PPP with GPS and GLONASS data integration as well as accuracy assessment with data collected under ionospheric scintillation effects are presented.en
dc.description.affiliationMilitary Institute of Engineering (IME) Cartography Engineering Section
dc.description.affiliationNottingham Geospatial Institute (NGI) University of Nottingham
dc.description.affiliationSão Paulo State University (UNESP) Department of Cartography
dc.description.affiliationUnespSão Paulo State University (UNESP) Department of Cartography
dc.identifierhttp://dx.doi.org/10.1051/swsc/2017043
dc.identifier.citationJournal of Space Weather and Space Climate, v. 8.
dc.identifier.doi10.1051/swsc/2017043
dc.identifier.file2-s2.0-85042409215.pdf
dc.identifier.issn2115-7251
dc.identifier.scopus2-s2.0-85042409215
dc.identifier.urihttp://hdl.handle.net/11449/175924
dc.language.isoeng
dc.relation.ispartofJournal of Space Weather and Space Climate
dc.relation.ispartofsjr1,439
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectGNSS data integration
dc.subjectIonospheric scintillation
dc.subjectPrecise Point Positioning
dc.titleAccuracy assessment of Precise Point Positioning with multi-constellation GNSS data under ionospheric scintillation effectsen
dc.typeArtigo
unesp.departmentCartografia - FCTpt

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