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ERS-2

 

The ERS satellites's (European Remote Sensing) main mission is to observe Earth, in particular its atmosphere and ocean. Build by Esa, the European Space Agency, they carry several instruments, including a radar altimeter.

ERS-2 was launched in April 1995 as the follow-on from ERS-1, with which it was used in tandem from August 1995 to June 1996, their identical orbits (35 days) having a one-day shift. 
In June 2003, ERS-2's onboard tape recorder used for the altimeter data has experienced a number of failures. This means that altimeter data are unavailable except for when the satellite is within visibility of Esa's ground stations over Europe, North Atlantic, the Arctic and western North America.
In July 2011, ERS-2 is put out of service by bringing down to a lower orbit. These deorbiting procedures are done while the fuel is still sufficient to make the careful manoeuvres.
Launched in March 2002, the Envisat satellite is the follow-on to ERS-1 and ERS-2.

Satellite  ERS-2
Launch on  21/04/1995
End Date  06/07/2011
Altitude  785 km
Inclination  98.52 °
Repetitivity  35 days
Agency  Esa
Goals  Observe Earth and its environment
Link 

Further information :

  • F.Mertz et al., Poster presentation at the OSTST 2011: ERS-2, an essential mission for oceanography (pdf)
  • ERS missions Home Page (Esa website),
  • ERS-2 (Cersat website)
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