[time-nuts] synchronizing a large number of weakly coupled oscillators
jimlux at earthlink.net
Wed May 12 13:29:47 UTC 2010
Eugen Leitl wrote:
> On Wed, May 12, 2010 at 06:03:11AM -0700, jimlux wrote:
>> Allan had a paper where he had 8 inexpensive crystals coupled with
>> mixers and a microcontroller. I think it's called the Clever
>> Temperature Compensated XO or something like that.
> Presumably, a large population of cheap coupled oscillators could be
> rather accurate collectively.
I think that there's a point of diminishing returns.. the uncertainties
in the coupling start to dominate over the reduction in uncertainty from
combining multiple clocks. one of those N vs sqrt(N) sort of things.
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