Abstract
The signal-to-noise improvement ratio (SNIR) of a Box-Car averager is calculated for various noise sources such as random white noise, exponentially correlated noise, etc. For a time constant (RC), and a sampling time ε, the quoted value of SNIR as (2RC/ε)1/2 is shown to be strictly correct only when the noise is white and deviation from this law is expected for other non-white noise sources. The validity of some of the calculated expressions is established by direct measurement of noise output.
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References
Abramowitz M and Stegun I A 1965Handbook of Mathematical Functions (New York: Dover)
Clarke W G and Kerlin A L 1967Rev. Sci. Instrum. 38 1593
Collins F G and Katchinoski R 1973Rev. Sci. Instrum. 44 1178
Ernst R R 1965Rev. Sci. Instrum. 36 1689
Heiftje G M 1972Anal. Chem. 44 81
Jardetzky O, Wade N G and Fisher J J 1965Nature 97 183
Klein M P and Barton B W 1963Rev. Sci. Instrum. 34 754
Princeton Applied Research Corporation (PARC) Manual 1976 on ‘Signal Averagers’
Reichert J and Townsend J 1964Rev. Sci. Instrum. 35 1692
Wax N 1954Selected Papers on Noise and Stochastic Processes (New York: Dover)
White G 1975Nucl. Instrum. Methods 123 575
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Neelakantan, K., Dattagupta, S. Analysis of signal-to-noise enhancement of box-car averagers. Pramana - J Phys 11, 295–306 (1978). https://doi.org/10.1007/BF02848191
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DOI: https://doi.org/10.1007/BF02848191