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  1. Measuring time to the thousand-billionth of a second

    Publishing date:

    June 29, 2010

    Since 7 June 2010, the Paris Observatory and Côte d’Azur Observatory have been firing lasers into space—more specifically at the T2L2 instrument on the Jason-2 satellite. The purpose of this experiment, coordinated by CNES, is to synchronize two remote clocks with unprecedented levels of precision.

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  2. Events archive

    Publishing date:

    October 7, 2014

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  3. 2010: T2L2, first time transfer by laser link

    Source:

    • Sciences et techniques

    Publishing date:

    September 5, 2011

    2010 T2L2: FIRST TIME TRANSFER BY LASER LINK

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  5. T2L2 dans les bagages de Jason

    Publishing date:

    June 26, 2008

    Jason-2, le satellite d’altimétrie lancé le 20 juin, a emporté dans ses bagages 3 instruments qui n’ont rien à voir (ou presque) avec la mesure de la hauteur des océans. Parmi eux, T2L2 (Transfert de Temps par Lien Laser). Son rôle : la synchronisation d’horloges.

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  6. Mission

    Publishing date:

    July 22, 2016

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  8. 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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  9. Organization

    Publishing date:

    July 22, 2016

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  10. 2010: premier transfert de temps par lien laser par T2L2

    Source:

    • Sciences et techniques

    Publishing date:

    September 5, 2011

    A la fin de l‘été 2010, une première série d’expériences a été réalisée pour transférer le temps entre l’Observatoire de la Côte d’Azur et l’Observatoire de Paris.

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  11. Organisation

    Publishing date:

    October 7, 2014

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  12. Instrument

    Publishing date:

    July 22, 2016

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  13. Segment Sol

    Publishing date:

    August 24, 2015

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  14. Instrument

    Publishing date:

    October 7, 2014

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  15. System

    Publishing date:

    July 22, 2016

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  16. Système

    Publishing date:

    October 7, 2014

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  17. Mission

    Publishing date:

    October 7, 2014

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  18. 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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  19. 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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  20. Exploitation

    Publishing date:

    July 22, 2016

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