HydroGNSS

HydroGNSS

With funding from ESA's Scout programme, SSTL is building HydroGNSS, a 55kg small satellite to measure climate change variables.  HydroGNSS will take measurements of key hydrological climate variables, including soil moisture, freeze thaw state over permafrost, inundation and wetlands, and above ground biomass, using a technique called GNSS Reflectometry which exploits existing signals from Global Navigation Satellites, such and GPS and Galileo, as radar signal sources. These signals are reflected off the land, ice and ocean and can be collected by a low power receiver on a small satellite in low Earth orbit, and used to yield important geophysical measurements.

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