Mission description

ENVISAT mission



Launched: 1st March 2002 
Data available: 26 August 2002-> 21 October 2010 (cycle 94, orbit 43)
Altitude: 800 km
Repeat Time:35 days (501 orbits / cycle)
Distance between groundtracks: 90 km at the equator 
Alongtrack Resolution: 7 km

Ra-2 S-band lost since 2008/01/18 (cycle 65)

Orbit change start:  22 October 2010 (cycle 94, orbit 43)

End manoeuvre: 1st November 2010 (cycle 96, orbit 60)
Data available: 26 October 2010 (cycle 95, orbit 409) -> 8 april 2012 (cycle 113)

Altitude: 800 km - 17.4 km

Repeat Time: 30 days (431 orbits / cycle)
No more inclination control (but altitude control still maintained)

End (lost comm.): 8 april 2012 (cycle 113)


The ENVISAT satellite (ENVIronmental SATellite), successor of ERS-1 and 2 was launched on March 1st, 2002. Dedicated to the study of the environment, in particular to the follow-up of climate change, its mission is to observe the atmosphere and the surface of the Earth. Built by ESA, it has on board a series of additional instruments (with a radar altimeter RA2, the system of orbitography and precise location DORIS) allowing it to observe a large number of geophysical parameters.

A more detailed description of the ENVISAT mission is found on the ESA site



Nominal paths are described in ERS-2/Envisat nominal path and Envisat new orbit


And for Envisat.v21 reprocessing: http://www.aviso.oceanobs.com/es/calval/latest-results/envisat-reprocessing.html


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