CEOS Instrument: Positioning Ocean Solid Earth Ice Dynamics Orbiting Navigator (Single frequency solid state radar altimeter)




Instrument:POSEIDON-3
Agency: CNES
Mission: OSTM (Jason-2)
Status:Operational
Type:Radar altimeter
Description:Nadir viewing sounding radar for provision of real-time high precision sea surface topography, ocean circulation and wave height data
Spatial Resolution: Basic measurement: 1/sec (6 km along track), Raw measurement: 10/sec (600 m along track)
Swath Width: On baseline TOPEX/POSEIDON orbit (10 day cycle): 300 km between tracks at equator
Wavebands: Microwave: Ku-band (13.575 GHz), C-band (5.3 GHz)
Technology: Radar altimeter
Description: Nadir-viewing radar for very accurate ranging measurement between satellite and surface. The spread of echoes provides information on significant wave height, the intensity on the wind speed, the multi-temporal analysis the ocean dynamic topography and the geoid. The instantaneous field of view is ~ 25 km and moves along track. The radar altimeter operates in Ku-band (~ 13 GHz) with the support of C-band (~ 5 GHz) for correction from ionospheric rotation; and is associated to a nadir-pointing MW radiometer for water vapour correction. Applicable only in LEO.

Measurement List:

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CEOS Systems Engineering Office (SEO)

CEOS Data Base Version: 17 - Created: 2012-01-18