[ntp:questions] OT: high-accuracy atomic clock to be attached outside of the International Space Station

Rick WIdmer yahoo at rickwidmer.com
Wed Dec 16 04:44:07 UTC 2009


On 12/15/2009 2:02 PM, John Hasler wrote:
> Jan Ceuleers writes:
>> Secondly though, is the ISS able to receive GPS signals in order to
>> remove the need for its own high-accuracy clock?
>
> This appears to be a research-grade clock with epecially good long-term
> stability.
>
>> Assuming that the accuracy that results would still be good enough?
>
> I don't think GPS time would be adequate for the planned research.

This page has some info on the science.  Look in the lower right.

http://www.spaceflight.esa.int/users/downloads/factsheets/fs031_10_aces.pdf

One of them is "Absolute synchronization of ground clocks" to within 100ps.

Rick



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