Unlike conventional radar altimeters, where the interval between pulses is about 500 ¼s, the CryoSat-2 altimeter will send a burst of pulses with an interval of only 50 ¼s between them. The returning echoes will be correlated, and by treating the whole burst at once, the data processor can separate the echo into strips arranged across the track by exploiting the slight frequency shifts (caused by the Doppler effect) in the forward- and aft-looking parts of the beam.
SAR/Interferometric Radar Altimeter
Arctic sea ice: 1.6 cm/year
Along-track resolution: 250 m (SAR/SARIn)
Snow and Ice ( Sea Ice , Snow and Ice )
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