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22 November 2024 ESA Scout HydroGNSS monitoring soil moisture and forest biomass
Nazzareno Pierdicca, Emanuele Santi, Leila Guerriero, Hamed Izadgoshasb, Flavio Cordari, Estel Cardellach, Martin Unwin
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Proceedings Volume 13195, Microwave Remote Sensing: Data Processing and Applications III; 1319507 (2024) https://doi.org/10.1117/12.3035364
Event: Remote Sensing, 2024, Edinburgh, United Kingdom
Abstract
HydroGNSS is a small satellite mission under the ESA Scout Programme tapping into NewSpace, as part of ESA’s FutureEO Programme, within a budget of €30M and a schedule of three years from mission kick-off to launch. The mission comprises two satellites using an innovative GNSS-Reflectometry instrument to collect parameters related to the Essential Climate Variables (ECVs): soil moisture, inundation, freeze/thaw, biomass, ocean wind speed and sea ice extent. The satellite is being developed by Surrey Satellite Technology Ltd. (SSTL) under an ESA contract, in collaboration with a scientific team taking care of the end-to-end simulation and the development of the Level 1b and Level 2 algorithms. GNSS-Reflectometry is a type of bistatic radar that uses multiple broadcast signals of opportunity from GNSS satellites, empowering small satellites to provide measurement quality associated with radar satellites. GNSS-R is sensitive to soil moisture as the latter changes the permittivity of the soil and thus the specular reflectivity of the surface. Moreover, vegetation attenuates the signal reflected by the underneath surface, and thus the reflectivity is also sensitive to forest biomass.
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Nazzareno Pierdicca, Emanuele Santi, Leila Guerriero, Hamed Izadgoshasb, Flavio Cordari, Estel Cardellach, and Martin Unwin "ESA Scout HydroGNSS monitoring soil moisture and forest biomass", Proc. SPIE 13195, Microwave Remote Sensing: Data Processing and Applications III, 1319507 (22 November 2024); https://doi.org/10.1117/12.3035364
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KEYWORDS
Satellites
Biomass
Soil moisture
Algorithm development
Environmental monitoring
Climatology
Satellite navigation systems
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