Full Name Space GNSS Receiver - Remote Sensing Instrument (Zynq based)
aka GNSS Reflectometer
Status Being developed
Instrument Agencies UKSA, ESA Maturity
Instrument Type Other Geometry Nadir-viewing
Instrument Technology GNSS receiver Sampling Other
Data Access Open Access Data Format NetCDF L1b (Delay Doppler Maps) and L2 (Soil Moisture, Freeze Thaw, Inundation, Biomass, Ocean wind speed, Sea Ice Extent)
Measurements and Applications Ocean winds, waves, soil moisture, flooding, ice, snow
Resolution Summary 25 km for diffuse scattering, <1 km resolution for coherent reflections
[Best Resolution: 500m]
Swath Summary Tracks sampled up to approx 700 km apart, wider possible with different antenna, more channels
[Max Swath: 700 km]
Accuracy Summary Goals: Soil Moisture: 0.04 m3/m3, Freeze-Thaw: 90%, Inundation: 90%, Biomass: 20%, Ocean wind Speed: 2 m/s, Sea ice extent: 90%.
Waveband Summary L-Band (1575 MHz & 1176 MHz)
L-Band (2 - 1 GHz)
Instrument Measurements
Measurements Overview
Ocean surface windsWind speed over sea surface (horizontal)
Ocean wave height and spectrumSignificant wave height
Sea ice cover, edge and thicknessSea-ice cover
Sea-ice thickness
Sea-ice Concentration
Soil moistureSoil moisture at the surface
Surface inundation
VegetationAbove Ground Biomass (AGB)
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Above-ground biomass click here click here search ECV Inventory records
Sea Ice click here click here search ECV Inventory records
Sea State click here click here search ECV Inventory records
Soil Moisture click here click here search ECV Inventory records
Instrument Missions
HydroGNSS - HydroGNSS-A and -B (2024 - 2029)