[time-nuts] Convert ADEV specs to MDEV?

[Bob Camp]

Hi

The intended purpose of MDEV was to supply a plot that looked the same as an ADEV
plot *except* for separating flicker phase. To the extent they succeeded, you can use
the same plot on either one. (and as long as flicker phase is not an issue). To the extent
they failed, you are stuck. 

Bob

> On Apr 23, 2016, at 12:58 AM, Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
> 
> Hi,
> 
> On 04/23/2016 02:54 AM, Stewart Cobb wrote:
>> TimeLab can show "mask" overlays on various plots. It comes with a set of
>> ADEV masks for cesium clocks, derived from the manufacturer's
>> specifications for those clocks.
>> 
>> Those masks don't show up on MDEV plots, because the manufacturers don't
>> provide MDEV specs.
>> 
>> For the mathematicians out there: is there a way to convert ADEV specs into
>> equivalent MDEV specs?
>> 
>> If not, does anyone have good measured MDEV data on any of the popular
>> cesium clocks?
> 
> The slopes of ADEV for the different noises can be converted to slopes in MDEV. It is the separation of white phase modulation and flicker phase modulation that doesn't go very well with ADEV, but works in MDEV, but if you ignore the flicker then you should be able to translate without too much difficulty.
> 
> Good luck!
> 
> Cheers,
> Magnus
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