Date: Wed, 31 Jan 1996 11:12:42 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: pete@pelican.com (Pete Carah) Cc: questions@FreeBSD.org Subject: Re: good NTP servers Message-ID: <199601311812.LAA10118@phaeton.artisoft.com> In-Reply-To: <m0thXbb-0000SMC@pelican.com> from "Pete Carah" at Jan 31, 96 00:09:00 am
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> USNO are *not* _using_ gps; it's the other way around. They feed the > gps system its sync (probably via the USAF). How are they syncing Cesium clocks at multiple locations? There are relativistic effects from moving a presynced clock, running two clocks at different gravities (altitude/surface mass density) and angular rotation rates (lattitude, and altitude again: distance from axis of rotation). They *must* sync by knowing relative position and relative sync differential based on local relativistic effects in the sync source and destination. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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