15 points•5 comments•5h ago•by cgeier•orbitaltoday.com ↗

All Four Sentinel-1 Satellites Are Now Live

Europe’s Copernicus Sentinel-1 radar constellation is now at full capacity with Sentinel-1D entering full operational service after its in-orbit commissioning. The quartet builds on Sentinel-1A (2014) and Sentinel-1B (decommissioned in 2022), with Sentinel-1C joining in 2024 to restore four-satellite coverage and continuous, all-weather radar imagery for disaster, ice, land-deformation, deforestation and flood monitoring. The mission seeks an unbroken two-decade data record and includes debris-reducing separation mechanisms on Sentinel-1C and -1D, with ESA planning Sentinel-1 Next Generation.

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