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- W818879079 abstract "In GNSS, one of the main error sources of the Standard Positioning Service (SPS) is introduced by the ionosphere.Althoughthis error can be cancelled by combining two signals at differentfrequencies, most of the single-frequencymass-market receivers do not benefit from this cancellation. For that reason, a set of parametersis included in the navigationmessage in order to compute the ionospheric delay of any observation by theKlobuchar model. The Klobuchar model is a verysimple model that is able to remove more than the 50% of the ionospheric delay.Recently, more accurate ionospheric modelshave been introduced such as Global Ionospheric Map (GIM) or theFastPrecisePointPositioning(FPPP) ionospheric model.In previous works, with data gathered in Europe, it was shown the advantage of theFPPP’s ionospheric model. In this work,we conduct experimentsto compare the performance of different ionosphericmodellingmethods including: Klobuchar, GIMsandFPPP. Our preliminary results show howFPPP and GIMslead to better positioning precisions compared to the Klobucharmodel. However, since data is not wide enough to cover different ionospheric conditions, more experiments will becarried outin our future work to validate the current results." @default.
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- W818879079 date "2013-11-25" @default.
- W818879079 modified "2023-10-17" @default.
- W818879079 title "Experiments on the Ionospheric Models in GNSS" @default.
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