[time-nuts] Zero dead time and average frequency estimation

Ed Palmer ed_palmer at sasktel.net
Tue Feb 2 02:20:32 UTC 2010


Go to your public library and request the articles via interlibrary 
loan.  I recently got Oliver Collins paper on Low Jitter Hard Limiters 
that way.  Depending on your library's policies it might be free or cost 
a few dollars.  It cost me $2.50 for photocopying.  I'm not sure if you 
can get the actual journal.

Ed

paul swed wrote:
> Unfortunately can't download these
>
> On Mon, Feb 1, 2010 at 6:06 PM, Magnus Danielson <magnus at rubidium.dyndns.org
>   
>> wrote:
>>     
>> Bruce,
>>
>> Bruce Griffiths wrote:
>>
>>     
>>> There are some excellent papers on the subject; start with
>>>       
>>>>> the one by Rubiola:
>>>>> <
>>>>> http://www.femto-st.fr/~rubiola/pdf-articles/journal/2005rsi-hi-res-freq-counters.pdf>
>>>>>
>>>>> There are additional papers (perhaps Bruce can locate them).
>>>>>
>>>>>           
>>>> In particular, there is one paper that corrects some mistakes of Rubiola,
>>>> Australian if I remember correctly.
>>>> Yes, the paper by Dawkins, McFerran and Luiten:
>>>>
>>>> http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F4318993%2F4318994%2F04319178.pdf%3Farnumber%3D4319178&authDecision=-203<
>>>> http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F4318993%2F4318994%2F04319178.pdf%3Farnumber%3D4319178&authDecision=-203>
>>>>
>>>>
>>>>         
>> Yes, many thanks.
>>
>> This article by J.J. Snyder, "An Ultra-High Resolution Frequency Meter",
>>  FCS #35, is very useful:
>> http://www.ieee-uffc.org/main/publications/fcs/proceed/1981/s8110464.pdf
>>
>> It describes an hardware implementation of a zero dead-time counter
>> (crude!) implementing the algorithm. It performs the averaging in the way I
>> described earlier. The above paper by Snyder is the inspiration to the
>> original MDEV paper published in for the same conference and directly
>> following:
>>
>> David W. Allan and James A. Barnes, "A modified Allan Variance with
>> increased oscillator characterization ability", FCS #35.
>> http://www.ieee-uffc.org/main/publications/fcs/proceed/1981/s8110470.pdf
>>
>> From the same conference exists a summary paper of Howe, Allan and Barnes
>> on measurements, spending time on comparing over-lapping and non-overlapping
>> estimators, effective use of data, DF/EDF, chi-square etc. etc.
>>
>> Cheers,
>> Magnus
>>     



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