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Jason 1

Jason 1 [CNES]

Jason-1 is the first follow-on to the highly successful TOPEX/Poseidon mission that measured ocean surface topography to an accuracy of 4.2 cm, enabled scientists to forecast the 1997-1998 El Niño, and improved understanding of ocean circulation and its effect of global climate. The joint NASA-CNES program will launch a French spacecraft on an American Delta-7920-10C from Vandenberg AFB. Like TOPEX/Poseidon, the payload will include both American and French instruments. Jason-1 altimeter data will be part of a suite of data provided by other JPL-managed ocean missions - the GRACE mission will use two satellites to accurately measure Earth's mass distribution, and the QuikSCAT scatterometer mission will measure ocean-surface winds.

Jason 1 features following instruments:

  • JMR: Microwave radiometer
  • TRSR: GPS tracking receiver
  • LRA: Laser retroreflector array
  • Poseidon-2: A solid state radar altimeter
  • DORIS: Doppler tracking system receiver

Jason 1 was retired in July 2013 after 11.5 years in orbit, surpassing its 3 years design life. Its mission was continued by the Jason 2 and 3 satellites.

Nation: USA, France
Type / Application: Altimetry, Radar
Operator: NASA, CNES
Contractors: Alcatel Space
Equipment: JMR, TRSR, LRA, Poseidon-2, DORIS
Configuration: Proteus Bus
Power: 2 deployable solar arrays, batteries
Lifetime: 3 years; 11.5 years (achieved)
Mass: 500 kg
Orbit: 1366 km, 66°
Satellite COSPAR Date LS Launch Vehicle Remarks
Jason 1 2001-055A 07.12.2001 Va SLC-2W Delta-7920-10C with TIMED
Further TOPEX-Poseidon / Jason / SWOT missions:

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