HydroGNSS is a European Space Agency (ESA) mission within the Scout programme – a series of rapid, low-cost Earth observation missions designed to demonstrate innovative approaches to gathering climate and environmental data.
The two satellites will measure key climate variables such as soil moisture, flooding, permafrost thaw, biomass and ocean roughness by exploiting signals from existing GNSS (Global Navigation Satellite System) constellations in a novel way. By capturing how GNSS signals are reflected from the Earth’s surface, HydroGNSS provides a cost-effective method for monitoring some of the most critical indicators of climate change.
For our team in Guildford, the departure of the spacecraft is the culmination of years of design, manufacture, integration and testing. Each step has involved close collaboration with ESA and our industry partners, and the handover for launch is a significant moment for everyone involved.
Peter Garner, SSTL Senior Project Manager said “HydroGNSS demonstrates the very best of what the Scout programme is about – fast, affordable, innovative missions that deliver high-value science. Seeing both satellites leave our factory for launch is a proud day for SSTL and we look forward to following their progress into orbit.”
Once in the US, the satellites will undergo final preparations before launch. HydroGNSS-1 and HydroGNSS-2 will then begin their in-orbit mission, helping scientists and policymakers better understand and respond to our changing planet.
We will be sharing updates as the mission progresses, so keep an eye on our website and social channels for launch news and the first results from orbit.