Abstract
A novel method of rotation speed measurement based on self-mixing speckle Autocorrelation Spectrum is presented. In this paper, Fabry–Perot cavity is used to analyze the self-mixing speckle theory. The Doppler frequency shift of the self-mixing speckle signal can be obtained by Autocorrelation Spectrum. Experimental results show that rotation speed can be measured by this means, with the error less than 2%.
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Schedule a callMore From: Optik - International Journal for Light and Electron Optics
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