[time-nuts] ADEV vs. OADEV
Magnus Danielson
magnus at rubidium.dyndns.org
Fri Jan 23 02:28:19 UTC 2009
Bruce,
Bruce Griffiths skrev:
> Addendum:
>
> There would appear to be only 3 underlying frequency stability
> statistics of interest in this paper:
>
> 1) Allan variance
>
> 2) Modified Allan variance
>
> 3) Hadamard variance
>
> Each of which has a different phase transfer function.
>
> All other statistical quantities related to frequency stability in this
> paper are actually estimators of one of the above underlying statistics
> Each estimator has different confidence limits and a different bias
> function which may depend on phase noise type.
> Correction for the underlying bias of each estimator is desirable before
> plotting the results.
> Confidence limits are also useful.
I agree... very good points.
Cheers,
Magnus
More information about the time-nuts
mailing list