摘要
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 measurement performance have been discussed.The proposed method provides a high-performance and cost-effective solution for distance and speed measurements,applicable across scientific research and various industrial domains.
作者
Jinyuan Yuan
Bin Liu
袁锦源;刘斌(School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China;SECTE,University of Wollongong,Wollongong NSW 2522,Australia)
基金
supported by the National Natural Science Foundation of China(No.62005234)
the China Scholarship Council Post-Doctoral Program(No.202107230002)
the Natural Science Foundation of Hunan Province(No.2024JJ6434).
