Speaker
Description
During the geomagnetic storm of October 10, 2024, GNSS-based augmentation services such as EGNOS APV-I (Approach with Vertical Guidance) and LPV (Localizer Performance with Vertical Guidance) were reported to experience a significant disruption. These services were unavailable for nearly one hour over southern Iberia and showed reduced availability across other parts of Europe. This reduction in service availability may have affected the feasibility of satellite-based precision approach procedures at certain airports, highlighting the potential vulnerability of aviation operations to space weather events. In this study, we present a comprehensive analysis of the sequence of events that led to this degradation. We trace the origin of the disturbance from solar activity precursors and their propagation through the interplanetary medium, to their impact on Earth's geomagnetic field. Furthermore, we examine how the resulting perturbations affected GNSS signal integrity and continuity, ultimately leading to the interruption of critical navigation services.
