[time-nuts] ublox NEO-M8T improved by insulated chamber?

Gary E. Miller gem at rellim.com
Tue Nov 7 15:40:54 EST 2017

Yo Lars!

On Tue, 7 Nov 2017 20:32:19 +0000
Lars Walenius <lars.walenius at hotmail.com> wrote:

> Another question: If You have an error in the surveyed position of
> say 3meters and you receive all of the available satellites in all
> directions how much will this really affect your timing?

I'll oversimply a bit by repeating Adm. Grace Hoppers famous giveaway.
When asked, she handed out 9 inch long peieces of wire, and said: that
is a nanaosecond.

3m is about 118.11 inches is about 13 ns.  So worst case, skipping the
3D math, yoy get about +/13 ns.

Which is small compared to the published GPS time resolution (IS_GPS_200H,
page 54) of 90 ns.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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