On 5/5/2013 6:35 AM, Miguel Barbosa Gonçalves wrote: > Hi fellow time nuts! > > I've recently bought a Trimble Acutime gold that will be used as a > reference clock for a NTP server. > > This receiver has the possibility of averaging it's position before > entering what Trimble calls the overdetermined clock state. The > default is to average the position with 2000 fixes. > > What do you believe is a good number of fixes for the survey in this case? > > Cheers, > Miguel
Accurate position might be important. Light travels a distance of something like 29.9792 centimeters per nanosecond You might find the results of this study to be helpful: http://www.syz.com/gps/gpsaveraging.html I myself did a sampling over a period of 1 million samples (actually, it was a value of 2^20, not exactly 1 "million") quickest it could have completed such a survey is 12+ days ... However, I had "masks" set for elevation, signal, etc. (resulted in occasional periods when there was no "lock") I'm quite satisfied / happy with the results :) hope this helps? --Sarah _______________________________________________ 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.