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Combining sub-Nyquist sampling and chirp decomposition for a high-precision and speed absolute distance measurement method.

Journal Article


Abstract


  • A high-precision and speed absolute distance measurement based on swept-wavelength interferometry is reported. A powerful method combining sub-Nyquist sampling and chirp decomposition for dispersion mismatch compensation is proposed. A standard deviation of 0.72 μm is obtained for the measurement of a target located at 3.9 m, which is better than the traditional method. The measurement can be completed in 1.9 s when the frequency range is 4.26 THz, which is much better than chirp decomposition without sub-Nyquist sampling.

Publication Date


  • 2016

Citation


  • Liu, G., Lu, C., Liu, B., Chen, F., & Gan, Y. (2016). Combining sub-Nyquist sampling and chirp decomposition for a high-precision and speed absolute distance measurement method.. Applied optics, 55(35), 9974-9977. doi:10.1364/ao.55.009974

Web Of Science Accession Number


Start Page


  • 9974

End Page


  • 9977

Volume


  • 55

Issue


  • 35

Abstract


  • A high-precision and speed absolute distance measurement based on swept-wavelength interferometry is reported. A powerful method combining sub-Nyquist sampling and chirp decomposition for dispersion mismatch compensation is proposed. A standard deviation of 0.72 μm is obtained for the measurement of a target located at 3.9 m, which is better than the traditional method. The measurement can be completed in 1.9 s when the frequency range is 4.26 THz, which is much better than chirp decomposition without sub-Nyquist sampling.

Publication Date


  • 2016

Citation


  • Liu, G., Lu, C., Liu, B., Chen, F., & Gan, Y. (2016). Combining sub-Nyquist sampling and chirp decomposition for a high-precision and speed absolute distance measurement method.. Applied optics, 55(35), 9974-9977. doi:10.1364/ao.55.009974

Web Of Science Accession Number


Start Page


  • 9974

End Page


  • 9977

Volume


  • 55

Issue


  • 35