[time-nuts] Periods in GPS systems.

Bob Camp kb8tq at n1k.org
Tue Oct 21 20:31:03 EDT 2014


Hi

They sound like update rates on the filter in your GPSDO.

Bob

> On Oct 21, 2014, at 6:10 PM, dan at irtelemetrics.com wrote:
> 
> Hi All,
> 
> I've been playing with a GPSDO a little here. In order to get a handle on the response time of the loop, I ran an FFT on the EFC DAC value over a long run. What was interesting, was that three frequencies popped up with minor peaks. They were cycles that equaled 512 seconds, 682 seconds, and 1024 seconds. 
> 
> Is anyone aware of any periods like this in the GPS system? These seem rather conspicuous!
> 
> Dan
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.




More information about the time-nuts mailing list