THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - SRAL -
Full Name SAR Radar Altimeter Status Operational
Instrument Agencies ESA, COM Maturity
Instrument Type Radar altimeters Geometry Nadir-viewing
Instrument Technology Radar altimeter Sampling Other
Data Access Open Access Data Format
Measurements and Applications Marine and land services.
Resolution Summary 300 m
[Best Resolution: 300m]
Swath Summary Profiling
Accuracy Summary 3 cm in range (1 s average, 2 m SWH including atm. corrections)
Waveband Summary Dual freq radar altimeter, Ku-band, C-band
MW (~1.0 cm - ~100 cm)
Ku-Band (12.5 to 18 GHz)
C-Band (8 - 4 GHz)
Instrument Measurements
Measurements Overview
CategoryParameter
Atmospheric Humidity FieldsAtmospheric specific humidity (TC)
Gravity, Magnetic and Geodynamic measurementsGeoid
Ice sheet topographySea-ice sheet topography
Landscape topographyLand surface topography
Ocean surface windsWind speed over sea surface (horizontal)
Ocean topography/currentsSea level
Ocean dynamic topography
Ocean wave height and spectrumSignificant wave height
Sea ice cover, edge and thicknessSea-ice cover
Sea-ice thickness
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Sea Ice click here click here search ECV Inventory records
Sea Level click here click here search ECV Inventory records
Sea State click here click here search ECV Inventory records
Water Vapour (upper air) click here click here search ECV Inventory records
Instrument Missions
Sentinel-3 A - Sentinel-3 A (2016 - 2026)
Sentinel-3 B - Sentinel-3 B (2018 - 2028)
Sentinel-3 C - Sentinel-3 C (2023 - 2033)
Sentinel-3 D - Sentinel-3 D (2026 - 2035)
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