Hi Bill:
Are they using GPS directly, or to discipline a high quality oscillator, say a Cs? Since it's frequency is spot on then
all the GPS is doing is setting the edge of the 1 PPS. The difference between the Cs 1 PPS and GPS 1 PPS can be
measured over a day or more to see what it looks like. I would expect that to be excellent.
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.End2PartyGovernment.com/
Bill Hawkins wrote:
A good friend, who has written a lot of excellent real-time software,
maintains that that it is impossible to find all of the systematic
errors in something as complex as the GPS system. The error is small,
60 ns in 2.4 ms, about 3 E-5, for OPERA or 8 E-5 for MINOS.
Has anyone measured the speed of light with GPS clocks in the same
way that neutrinos are measured - say between mountain tops?
Another way would be to get a common view light flash from a
magnesium flare on a high altitude rocket.
There's a lot at stake here. Many physicists will prematurely wear
out their brains looking for the answer.
Bill Hawkins
[email protected] (already on all the spam lists)
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