The main geophysical parameters to be measured by the SENTINEL-3 topography mission are:
These parameters are retrieved from the physical characteristics of the altimeter waveforms received by the SRAL instrument.
Figure 1: Physical Characteristics of the Altimetry Waveforms (Credit: isardSAT)
Table 1: Measurement requirements for altimetry specified for 1 Hz averaged along track samples
An ensemble of Test Data Sets using simulated data, has been created for different surfaces (e.g. ocean, ice sheets, inland waters), different processing levels (Level-1 and Level-2) and timeliness (NRT, STC and NTC).