首页|Simultaneous measurement of distance and speed using frequency-modulated continuous-wave self-mixing interferometry and all-phase fast Fourier transform
Simultaneous measurement of distance and speed using frequency-modulated continuous-wave self-mixing interferometry and all-phase fast Fourier transform
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In this work,we propose a method using frequency-modulated continuous-wave[FMCW]self-mixing interferometry[SMI]and all-phase fast Fourier transform[APFFT]for simultaneous measurement of speed and distance.APFFT offers superior accuracy in frequency determination by mitigating issues like the fence effect and spectrum leakage,contributing to the high-accuracy measurement for speed and distance.Both simulations and experiments have demonstrated relative errors at the levels of 10-4 and 10-3 for distance and speed measurements,respectively.Furthermore,factors impacting mea-surement performance have been discussed.The proposed method provides a high-performance and cost-effective sol-ution for distance and speed measurements,applicable across scientific research and various industrial domains.
self-mixing interferometryfrequency-modulated continuous-wave interferometryall-phase fast Fourier transformmeasurement of distance and speed
袁锦源、刘斌
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School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China
SECTE,University of Wollongong,Wollongong NSW 2522,Australia
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