Mitigation of Ionospheric Scintillations Effect on NavIC Signals Using Multipath Parameter and Rate of TEC Index
Keywords:
NavIC; Scintillation; Rate of TEC Index; Multipath parameter (MP); Precise Point PositioningAbstract
Improving the precision of Navigation with Indian Constellation (NavIC) positioning requires addressing the disturbances presented by ionosphere scintillation. Errors like cycle slip and measurement disparities are introduced by this phenomenon, which affects satellite lock and, in severe situations results in positioning failures. The usefulness of traditional scintillation parameters, S4 and , is limited since they need high-frequency data. Using 1 Hz data, this research investigates the usage of the multipath parameter (MP) and the rate of total electron content index (ROTI) as substitutes for scintillation parameters. Satellite removal is greatly outperformed by procedures incorporating observation removal and noise matrix weighting, according to comparative analysis and validation against standard parameters (S4 and ). The suggested methods show an impressive 93.14% increase in Precise Point Positioning (PPP) outputs, proving that ROTI and MP are effective at reducing scintillation effects.
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