Effects of ionospheric plasma irregularities at the equatorial zone on GPS signal
Résumé
This paper studies scintillations of the GPS signal in the equatorial zone created by the ionospheric plasma irregularities. RINEX Data resulting from GPS stations located at ±20° from the magnetic equator were used. This study was carried out by considering three GPS stations including the station from Dakar, that of Yamoussoukro and that of Cotonou. They belong to the IGS (International GNSS Services) network. The equatorial zone is one of most impacted areas by ionospheric irregularities causing scintillations of GPS signal which affect the phase measurement and thus can degrade the GPS receiver's performances during a positioning. The ROTI index was calculated to detect existing ionospheric irregularities. This index enabled us to detect scintillations of the GPS signal on a positioning situation.
Domaines
Planète et Univers [physics]| Origine | Fichiers produits par l'(les) auteur(s) |
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