CALIBRA: Mitigating the impact of ionospheric scintillation on Precise Point Positioning in Brazil

ABSTRACT
The current increase in solar activity occurs at a time when our reliance on high-precision GNSS applications has reached unprecedented proportions. The perturbations caused in the ionosphere by such solar activity pose a major threat to these applications, in particular in
equatorial regions such as Brazil where high exposure to solar-induced disturbances comes with a high reliance on precise GNSS applications in a number of key areas such as in the oil and gas industry. Mitigating the impact of severe ionosphere disturbance on high-precision
positioning is the main goal of the FP7 CALIBRA project, which first results are discussed in this paper. We focus on the impact of scintillations, one of the most forthcoming disturbances, on real time precise point positioning (PPP). A simple and effective mitigation approach is discussed and shown to significantly increase the resilience of PPP applications to scintillations.

Full technical paper (PDF)

B. Bougard, A. Simsky and J.-M. Sleewaegen, (Septentrio); Jihye Park and M. Aquino, (Univ. of Nottingham, UK); L. Spogli, V. Romano (Istituto Nazionale di Geofisica e Vulcanologia, Italy; M. Mendonça, J.-F. Galera Monico, (Univ. Estadual Paulista, Brazil)