ERS-2 mission

ERS-2 mission reprocessing at CTOH for continental surfaces
ERS-2 mission reprocessing at CTOH for continental surfaces
ERS-2 is a spatial altimetric mission operating between 1995 and 2011 but providing data globally until 2003. The principle of radar altimetry is the following: the altimeter emits a radar pulse and measures the two-way travel-time from the satellite to the surface. The distance between the satellite and the Earth surface – the altimeter range – is thus derived with a precision of a few centimeters. The satellite altitude referred to an ellipsoid is also accurately known from orbitography modeling. Taking into account propagation delays due to interactions of electromagnetic wave in the atmosphere and geophysical corrections, the height of the reflecting surface with reference to an ellipsoid (Chelton et al., 2001; Frappart et al., 2017).
Image ERS-2_reprocessing

Document Actions

logo cnes logo IRD Logo université de Toulouse Logo université Paul Sabatier Logo CNRS
Logo bibliothèque OBS Logo Observatoire Midi Pyrénées