Ionospheric Scintillation

Mitigating the effect of ionospheric scintillation on GNSS positioning.

SpacEarth NAV’s Scintillation Mitigation Solution eliminates or mitigates the impact of scintillation on GNSS-based real-time positioning and navigation, by exploiting the streaming of the scintillation indices provided by a local, regional or global network of static GNSS receivers.

Scintillation indices are used to generate a weighing matrix for modifying the a-priori observables variance matrix of the GNSS rover receivers, the signal being corrupted by scintillation, thus updating the (stochastic) model of the PVT (Position, Velocity and Time) estimator of the rover receivers.

Depending on the application and on the update rate of scintillation indices streaming by the static GNSS network, they can be used “as is” or can be used as input for a Short-Term Forecasting model which forecasts scintillation indices with a time horizon from seconds up to minutes in advance.

Technical details