[time-nuts] Periods in GPS systems.

dan at irtelemetrics.com dan at irtelemetrics.com
Tue Oct 21 22:10:17 UTC 2014


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





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