[time-nuts] question about multi-way measurement

[Bob kb8tq]

Hi

One simple answer is that it’s not always 1:1 comparisons. The “three corner hat” 
approach is indeed used to compare three devices at one time. There are some 
issues with doing that. There are *lots* of papers on where the limits come from 
and what you need to do ( = pick fairly similar clocks) to eliminate most of them.

Bob

> On Dec 26, 2018, at 11:30 AM, Chris Howard <chris at elfpen.com> wrote:
> 
> 
> 
> I see the different forms of deviation measurements and they are all one-to-one comparisons.
> 
> Is there anything to be learned from doing mass data gathering?
> 
> For example, if I had a device of relatively good resolution that would let me
> timestamp the events from 100 different clocks, then questions about the
> change of the mean of the cloud of events, distance from the mean of individual
> events, etc. could be obtained.
> 
> One of many things I have learned hanging around here is that some
> very very smart people have already thought of anything that
> might come to me.
> 
> It seems like, if there were a significant number of clocks involved, the mean
> of the cloud of events would help cancel out positive and negatives and particularly
> remove the short term randomness ?
> 
> So, has this sort of thing been done?
> Why is everything one-to-one only?
> 
> 
> 
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