Journal
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
Volume 14, Issue -, Pages 6987-6999Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTARS.2021.3089550
Keywords
Global navigation satellite system; Soil moisture; Soil measurements; Biomass; Sea measurements; Earth; Reflection; Global navigation satellite system (GNSS); global navigation satellite system reflectometry (GNSS-R); hydrology; remote sensing
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Funding
- European Space Agency [4000129140/19/NL/CT]
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HydroGNSS has been selected as the second ESA Scout earth observation mission to demonstrate the capability of small satellites in delivering science. It will provide timely climate observations using GNSS reflectometry for four hydrological essential climate variables, meeting the scientific priorities of ESA's earth observation.
HydroGNSS (Hydrology using Global Navigation Satellite System reflections) has been selected as the second European Space Agency (ESA) Scout earth observation mission to demonstrate the capability of small satellites to deliver science. This article summarizes the case for HydroGNSS as developed during its system consolidation study. HydroGNSS is a high-value dual small satellite mission, which will prove new concepts and offer timely climate observations that supplement and complement the existing observations and are high in ESAs earth observation scientific priorities. The mission delivers the observations of four hydrological essential climate variables as defined by the global climate observing system using the new technique of GNSS reflectometry. These will cover the world's land mass to 25 km resolution, with a 15-day revisit. The variables are soil moisture, inundation or wetlands, freeze/thaw state, and above-ground biomass.
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