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Multi-frequency GNSS robust carrier tracking for ionospheric scintillation mitigation

Vilà-Valls, Jordi and Closas, Pau and Curran, James T. Multi-frequency GNSS robust carrier tracking for ionospheric scintillation mitigation. (2017) Journal of Space Weather and Space Climate, 7 (A26). ISSN 2115-7251

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Official URL: https://doi.org/10.1051/swsc/2017020

Abstract

Ionospheric scintillation is the physical phenomena affecting radio waves propagating from the space through the ionosphere to earth. The signal distortion induced by scintillation can pose a major threat to some GNSS application. Scintillation is one of the more challenging propagation scenarios, particularly affecting high-precision GNSS receivers which require high quality carrier phase measurements; and safety critical applications which have strict accuracy, availability and integrity requirements. Under ionospheric scintillation conditions, GNSS signals are affected by fast amplitude and phase variations, which can compromise the receiver synchronization. To take into account the underlying correlation among different frequency bands, we propose a new multivariate autoregressive model (MAR) for the multi-frequency ionospheric scintillation process. Multi-frequency GNSS observations and the scintillation MAR are modeled in state-space, allowing independent tracking of both line-of-sight phase variations and complex gain scintillation components. The resulting joint synchronization and scintillation mitigation problem is solved using a robust nonlinear Kalman filter, validated using real multi-frequency scintillation data with encouraging results.

Item Type:Article
HAL Id:hal-03203754
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Centre Tecnològic de Telecomunicacions de Catalunya - CTTC (SPAIN)
Other partners > European Space Agency - ESA (THE NETHERLANDS)
Other partners > Northeastern University (USA)
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Deposited On:19 Apr 2021 14:28

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