On 9/24/2011 9:52 AM,  Tom Van Baak allegedly wrote:
We now have GPS, VLBI, the web, sat phones, mobile phones.
No one relies on sextants and DUT1 radio broadcasts anymore.

That's an argument for eliminating radio time broadcasts :)

Both GPS and VLBI require knowledge of UTC and UT1 for implementation. How does the GPS pick up the UT1 corrections? VLBI, at least when I was involved with it many years ago, depends on the IERS circular.


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        --Paul

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