[42975] in North American Network Operators' Group
Re: GPS SA and Network Timing
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Wed Sep 26 22:34:35 2001
Message-Id: <200109270233.f8R2Xun04080@foo-bar-baz.cc.vt.edu>
To: wb8foz@nrk.com
Cc: nanog@merit.edu (nanog list)
In-reply-to: Your message of "Wed, 26 Sep 2001 21:39:37 EDT."
<200109270139.VAA08223@sigma.nrk.com>
From: Valdis.Kletnieks@vt.edu
Date: Wed, 26 Sep 2001 22:33:56 -0400
Errors-To: owner-nanog-outgoing@merit.edu
On Wed, 26 Sep 2001 21:39:37 EDT, David Lesher <wb8foz@nrk.com> said:
> GPS is nothing but timing.
>
> I'm not quite sure how you'd change "position" without timing.
> Position is a function of time measurments...and a bunchamath.
The vast majority of people will not notice that their clocks
are 400 nanoseconds off. What are they going to check against?
The vast majority of people WILL notice if they hit the concrete
wall that's 400 feet past the highway exit. That's VERY easy
to check against.
Valdis Kletnieks
Operating Systems Analyst
Virginia Tech
