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- W2086949914 abstract "The focus of this paper is to disclose sources of measurement error in laser Doppler vibrometers (LDV) and to suggest specifications, suitable to describe their impact on measurement uncertainty. Measurement errors may be caused by both the optics and electronics sections of an LDV, caused by non-ideal measurement conditions or imperfect technical realisation. While the contribution of the optics part can be neglected in most cases, the subsequent signal processing chain may cause significant errors. Measurement error due to non-ideal behaviour of the interferometer has been observed mainly at very low vibration amplitudes and depending on the optical arrangement. The paper is organized as follows: Electronic signal processing blocks, beginning with the photo detector, are analyzed with respect to their contribution to measurement uncertainty. A set of specifications is suggested, adopting vocabulary and definitions known from traditional vibration measurement equipment. Finally a measurement setup is introduced, suitable for determination of most specifications utilizing standard electronic measurement equipment." @default.
- W2086949914 created "2016-06-24" @default.
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- W2086949914 date "2008-06-04" @default.
- W2086949914 modified "2023-10-16" @default.
- W2086949914 title "Sources of measurement error in laser Doppler vibrometers and proposal for unified specifications" @default.
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- W2086949914 doi "https://doi.org/10.1117/12.803150" @default.
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