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Instrument: RA-2 : Radar Altimeter-2
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Description
The Radar Altimeter-2 (RA-2) on the European Space Agency (ESA)
ENVISAT-1 spacecraft is an adaptive pulse limited radar altimeter
operating at a frequency of 13.8 GHz (K-band) and at 3.2 GHz
(S-band). The main objectives of the RA-2 are high-precision
measurements of significant wave height and sea level determination,
ocean circulation, ice sheet topography and land mapping. The 3.2 GHz
channel is used to measure and correct for ionospheric delays. The
RA-2 uses an adaptive range window with a bandwidth of 330 MHz for
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