Try again ..., Since 1cm of motion is equivalent to 30 ps, there's probably not much point in putting your GNSS antenna on a geodetic monument if all you care about is timing. But it does matter if you're trying to track continental drift.
Michael On Tue, 20 Jun 2017 at 10:44 pm, Michael Wouters <michaeljwout...@gmail.com> wrote: > Since 1cm of motion is equivalent to 30ps, there's probably not > > On Tue, 20 Jun 2017 at 10:11 pm, Didier Juges <shali...@gmail.com> wrote: > >> If that is not time-nutty, I do not know what will :) >> >> On Jun 20, 2017 7:04 AM, "jimlux" <jim...@earthlink.net> wrote: >> >> > >> > for geodetic measurements, they drill a hole down to bedrock, and run a >> > pipe down to anchor the antenna to the bedrock. >> > >> > "All holes shall be drilled straight enough so that PVC casing can be >> > installed in the top 15.5 ft of each hole, and that the steel pipe can >> be >> > freely lowered, not forced, for its entire 35 ft length." >> > >> > http://kb.unavco.org/kb/article/deep-drilled-braced-monument >> > -overview-300.html >> > http://www.scign.org/arch/sdb_monument.htm >> > >> > >> > Google for Ken Hudnutt's or Frank Webb's papers >> > >> > >> > or a 3m tall monument for a CORS station >> > >> > http://www.mwrtk.net/support_docs/corsinstallprocedures.pdf >> > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to https://www.febo.com/cgi-bin/m >> > ailman/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. >> > _______________________________________________ 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.