[LEAPSECS] Leap smear

[Paul J. Ste. Marie]

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.


-- 
         --Paul