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  1. 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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  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. 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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  4. Jason-2: a family affair

    Publishing date:

    May 27, 2008

    Jason-2’s main mission is to take over from its predecessor Jason-1 and assure data continuity. But the latest in the series of oceanography satellites is also carrying some new passengers. A brief tour of the “added extras” on Jason-2...

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