Sentinel-3B GNSS Reconfiguration Highlights Dependence on Galileo
On 13 January 2026, Europe’s Copernicus Earth-observation program carried out a planned reconfiguration of the GNSS receiver aboard the Sentinel-3B satellite, a low-profile engineering activity that nevertheless illustrates how deeply Galileo-based positioning and timing now underpin European Earth-observation services.
By Peter Gutierrez


