Transcription of Allan variance - Iowa State University
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Allan variance - Iowa State University
Allan variance1 Allan varianceThe Allan variance (AVAR), also known as two-sample variance , is a measure of frequency stability in clocks,oscillators and amplifiers. It is named after David W. Allan . It is expressed mathematically asThe Allan deviation (ADEV) is the square root of Allan variance . It is also known as sigma-tau, and is expressedmathematically asThe M-sample variance is a measure of frequency stability using M samples, time T between measures andobservation time . M-sample variance is expressed asThe Allan variance is intended to estimate stability due to noise processes and not that of systematic errors orimperfections such as frequency drift or temperature effects. The Allan variance and Allan deviation describefrequency stability, the stability in frequency.
Allan variance 1 Allan variance The Allan variance (AVAR), also known as two-sample variance, is a measure of frequency stability in clocks, oscillators and amplifiers. It is named after David W. Allan. It is expressed mathematically as The Allan deviation (ADEV) is the square root of Allan variance.It is also known as sigma-tau, and is expressed ...
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