Their measurements are usually referenced to a known survey point via differential methods.
Rob Kimberley -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Jim Lux Sent: 06 December 2010 4:40 AM To: j...@quik.com; Discussion of precise time and frequency measurement Cc: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] OT [GPS Survey grade RX] Sure.. That's what all those geodesy folks do. Over sufficient time span, one can relate gps measurements to an eci frame On Dec 5, 2010, at 5:43 PM, "J. Forster" <j...@quik.com> wrote: > GPS surveying "relative to astronomical reference"? I don't think so. > > -John > > ============== > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
