[time-nuts] How Rubidiums make their frequency

[Poul-Henning Kamp]

In message <20060420060353.6564ABDE6 at ip-64-139-1-69.sjc.megapath.net>, Hal Murr
ay writes:

>Is it reasonable to correct for the drift?  If the drift is slow enough the 
>communication channel is already in place.  It shouldn't be too much work for 
>the ground stations to track the frequency as well as position.

They have very complex models for the drift and they give very good
match to reality.

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