ESA HydroGNSS Scout mission operations
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· date approximate Milestone
HydroGNSS data open for new insights into Earth’s water
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· date approximate Background
Mission teams evaluated satellite performance, verified instruments, and calibrated data products over an eight-month period.
Following the launch of the two satellites in November 2025, mission teams conducted an eight-month evaluation period. During this time, teams evaluated satellite performance, verified instruments, and calibrated data products to prepare for full scientific operations.
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· date approximate Background
The HydroGNSS satellites were launched.
The HydroGNSS satellites were launched in November 2025. As the first ESA Scout mission developed under the Earth Observation FutureEO programme, these two satellites are designed to explore hydrological variables from space using Global Navigation Satellite System Reflectometry (GNSS-R).
The mission was built and is operated by Surrey Satellite Technology Ltd. Following their launch, the satellites underwent a commissioning period of eight months to evaluate performance and calibrate data products before entering full scientific operations.