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  1. Jason-2 takes to the air

    Publishing date:

    May 7, 2008

    Since 1992, altimetry satellites have significantly enhanced our knowledge of the world’s oceans. The Jason-2 satellite is all set to take over the ocean-observing mission of its predecessors Jason-1 and Topex/Poseidon. It recently arrived at Vandenberg Air Force Base, California, in preparation for launch on 15 June.

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  2. T2L2 hitches a ride on Jason-2

    Publishing date:

    July 15, 2008

    Three passenger instruments on Jason-2, the ocean surface topography satellite launched 20 June, won’t be measuring sea-surface height. One of them is the Time Transfer by Laser Link instrument (T2L2). Its job is to synchronize clocks.

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  3. Jason-2 all set to take satellite altimetry into higher gear

    Publishing date:

    October 29, 2008

    After 4 months of in-orbit commissioning, Jason-2 has entered the operational phase of its mission. The new ocean-observing satellite offers many improvements compared to its predecessor Jason-1.

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  4. 20 years in orbit for the Proteus satellite bus

    Publishing date:

    October 7, 2010

    The bus is a key element of a satellite, supplying power and enabling the spacecraft to be controlled from the ground. CNES has specialized in designing satellite buses since the 1990s. This year, its Proteus bus clocked up its 20th year in orbit.

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  5. Jason-2 delivers its first global maps

    Publishing date:

    March 11, 2010

    The european-US Jason-3 oceanography satellite is scheduled to launch in 2013 to replace Jason-1. Its objective is to continue monitoring sea-surface height and pursue the 21-year time series of high-accuracy ocean altimetry measurements.

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  6. Baptême de l’air pour Jason 2

    Publishing date:

    April 30, 2004

    Depuis 1992, les satellites d’océanographie altimétrique ont considérablement enrichi notre connaissance des océans. Pour assurer la relève, Jason 1, qui a lui-même succédé à Topex-Poséidon sera bientôt remplacé par Jason 2. Lancé le 15 juin prochain, il vient tout juste d'arriver à Vandenberg (Californie), sa base de lancement.

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  7. T2L2 ready to put Einstein’s theory to the test

    Publishing date:

    November 6, 2008

    The T2L2 instrument on board Jason-2 is working well after a 1st series of tests to compare the DORIS instrument’s clock with atomic clocks here on Earth. Scientists are continuing to calibrate the instrument.

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  8. A leap forward for oceanography

    Publishing date:

    June 10, 2008

    Over the last 15 years, altimetry satellites have been poring over the oceans in every detail, collecting more data in 10 days than could be gathered over several centuries by ships. This nascent revolution in oceanography promises to improve climate forecasting.

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  9. Depuis 1992: Topex-Poséidon, Jason 1 et Jason 2 voient la mer monter

    Source:

    • Sciences et techniques

    Publishing date:

    December 5, 2011

    Depuis le début des années 90, les satellites altimétriques de très haute précision Topex/Poseidon (1993-2006), Jason-1 (2001) et Jason-2 (2008) mesurent, avec une précision remarquable, l’élévation actuelle du niveau de la mer qui se poursuit inexorablement au rythme de 3,5 millimètres par an en moyenne.

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  10. T2L2: décortiquer la théorie d'Einstein

    Publishing date:

    November 6, 2008

    Pari gagné pour l’instrument T2L2 embarqué à bord de Jason-2. Les premiers tests ont permis de comparer l’horloge bord de l’instrument Doris avec des horloges atomiques au sol. Les scientifiques continuent le calibrage de l’instrument.

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  11. Station laser MEO de Calern

    Type of content :

      Publishing date:

      September 5, 2011
      st_station_laser_meo_calern_50_ans.png

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