THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - POSEIDON-2 (SSALT-2) -
Full Name Positioning Ocean Solid Earth Ice Dynamics Orbiting Navigator (Single frequency solid state radar altimeter) Status No longer operational
Instrument Agencies CNES Maturity
Instrument Type Radar altimeters Geometry Nadir-viewing
Instrument Technology Radar altimeter Sampling Sounding
Data Access Data Format NetCDF
Measurements and Applications Nadir viewing sounding radar for provision of real-time high precision sea surface topography, ocean circulation and wave height data.
Resolution Summary Basic measurement: 1/sec (6 km along track), Raw measurement: 10/sec (600 m along track)
Swath Summary On baseline TOPEX/POSEIDON orbit (10 day cycle): 300 km between tracks at equator
Accuracy Summary Sea level: 3.9 cm, Significant waveheight: 0.5 m, Horizontal sea surface wind speed: 2 m/s
Waveband Summary Microwave: Ku-band (13.575 GHz), C-band (5.3 GHz)
MW (~1.0 cm - ~100 cm)
Ku-Band (12.5 to 18 GHz)
C-Band (8 - 4 GHz)
Instrument Measurements
CategoryParameterAccuracy
Gravity, Magnetic and Geodynamic measurementsGeoid 
Landscape topographyLand surface topography 
Ocean surface windsWind speed over sea surface (horizontal) 
Ocean topography/currentsSea level 
Ocean wave height and spectrumSignificant wave height 
Instrument Missions
Jason-1 - Jason-1 (2001 - 2013)
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