[time-nuts] How long to monitor GPS? (was: Re: Rapco 1804M - serial problems?)

Chris Albertson albertson.chris at gmail.com
Fri Oct 21 12:06:26 EDT 2011

24 hours should in theory be enough but 2 is not a statistically valid
sample size.   you need more samples before you can say anything about
the probability of locking.  How many depends on the size of the error
bars you can live with.

On Fri, Oct 21, 2011 at 8:54 AM, David J Taylor
<david-taylor at blueyonder.co.uk> wrote:
>> I've now written a small plotting program to show the PDOP, satellite
>> signal strength, inactive/coarse/fine lock mode etc.  This ideally needs to
>> run for several days with the box connected to each puck in turn, but
>> preliminary results show that the unit achieved "fine" lock several times
>> with the new antenna, but never with the old.
Chris Albertson
Redondo Beach, California

More information about the time-nuts mailing list