Hi Antonio, A couple of thoughts...
First, remember the quartz crystals on the GPS SV are not free-running; they are just the LO of Rb or Cs atomic clocks. So you can partly answer the question yourself with a simple experiment at home. Have you ever seen frequency jumps in any of your cheap Rb or Cs clocks at home? Even one? If so how big was the jump? Second, can you better define what you mean by "frequency jump"? This is a familiar but vague term. In some respects one can say that every crystal, that every oscillator has frequency jumps. The frequency averaged over one tau is always different than than the frequency over the next tau, and the next, etc. If not, the ADEV would be zero. But as you know ADEV is never zero. The purpose of clock statistics is to show how close to zero it is. So it would be good for you to define your threshold of "jump" before we talk too much more about detecting them. /tvb _______________________________________________ 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.