Comments (2)
When ADEV is used for time/frequency data the x-formula and y-formula are equivalent, because fractional frequency y is the time derivative of phase x.
When ADEV is (mis)used for other raw data input like voltage (or like above, acceleration?), you most probably want to treat it like (fractional) frequency data and use the y-formula.
this is done in allantools with the data_type='freq' argument.
The AD-website link talks about 30s averages - allantools does the averaging for you. feed the raw data (e.g. sampled at 10S/s), and if you want ADEV at both tau=1s and tau=30s, with rate=10(Hz), then call with taus=[1,30]
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Thanks for the clarification!
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