ATIS Telecom Glossary
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Allan variance
One half of the time average over the sum of the squares of the differences between successive readings of the frequency deviation sampled over the sampling period. Note: The Allan variance is conventionally expressed by y2(). The samples are taken with no dead-time between them. Synonym two-sample variance.

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
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