A dual-frequency continuous wave doppler lidar for velocity measurement at far distance

Yabi Li; Yuxiao Xing; Yuan Gao; Haiyang Zhang; Zilong Zhang; Changming Zhao

doi:10.1002/mop.32797

A dual-frequency continuous wave doppler lidar for velocity measurement at far distance

Yabi Li, Yuxiao Xing, Yuan Gao, Haiyang Zhang, Zilong Zhang^*, Changming Zhao^*

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A dual-frequency continuous wave Doppler lidar for long-distance and high-precision velocity measurement is experimentally demonstrated in this article. The lidar system uses the optical heterodyne detection method to avoid complicated optical coherent configuration. All Phase Fast Fourier Transform and Chirp-Z Transform are used to obtain the Doppler frequency shift. The maximum of the calculated Doppler shift was 999.83 Hz with the frequency resolution of 0.54 Hz, and the corresponding theoretical velocity was determined to be 749.87 m/s. During the experiment, the speed of the car was successfully measured in the outdoor environment, the frequency and velocity resolutions were less than 0.5 Hz and ± 0.2 m/s, respectively, and the detection distance of moving and stationary targets reached 1100 m and 2300 m. The capability of the dual-frequency Doppler lidar system has been verified.

Original language	English
Pages (from-to)	1588-1594
Number of pages	7
Journal	Microwave and Optical Technology Letters
Volume	63
Issue number	5
DOIs	https://doi.org/10.1002/mop.32797
Publication status	Published - May 2021

Keywords

Doppler shift
chirp–z transform
dual-frequency laser
hypersonic
lidar

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10.1002/mop.32797

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title = "A dual-frequency continuous wave doppler lidar for velocity measurement at far distance",

abstract = "A dual-frequency continuous wave Doppler lidar for long-distance and high-precision velocity measurement is experimentally demonstrated in this article. The lidar system uses the optical heterodyne detection method to avoid complicated optical coherent configuration. All Phase Fast Fourier Transform and Chirp-Z Transform are used to obtain the Doppler frequency shift. The maximum of the calculated Doppler shift was 999.83 Hz with the frequency resolution of 0.54 Hz, and the corresponding theoretical velocity was determined to be 749.87 m/s. During the experiment, the speed of the car was successfully measured in the outdoor environment, the frequency and velocity resolutions were less than 0.5 Hz and ± 0.2 m/s, respectively, and the detection distance of moving and stationary targets reached 1100 m and 2300 m. The capability of the dual-frequency Doppler lidar system has been verified.",

keywords = "Doppler shift, chirp–z transform, dual-frequency laser, hypersonic, lidar",

author = "Yabi Li and Yuxiao Xing and Yuan Gao and Haiyang Zhang and Zilong Zhang and Changming Zhao",

note = "Publisher Copyright: {\textcopyright} 2021 Wiley Periodicals LLC",

year = "2021",

month = may,

doi = "10.1002/mop.32797",

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pages = "1588--1594",

journal = "Microwave and Optical Technology Letters",

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T1 - A dual-frequency continuous wave doppler lidar for velocity measurement at far distance

AU - Li, Yabi

AU - Xing, Yuxiao

AU - Gao, Yuan

AU - Zhang, Haiyang

AU - Zhang, Zilong

AU - Zhao, Changming

PY - 2021/5

Y1 - 2021/5

N2 - A dual-frequency continuous wave Doppler lidar for long-distance and high-precision velocity measurement is experimentally demonstrated in this article. The lidar system uses the optical heterodyne detection method to avoid complicated optical coherent configuration. All Phase Fast Fourier Transform and Chirp-Z Transform are used to obtain the Doppler frequency shift. The maximum of the calculated Doppler shift was 999.83 Hz with the frequency resolution of 0.54 Hz, and the corresponding theoretical velocity was determined to be 749.87 m/s. During the experiment, the speed of the car was successfully measured in the outdoor environment, the frequency and velocity resolutions were less than 0.5 Hz and ± 0.2 m/s, respectively, and the detection distance of moving and stationary targets reached 1100 m and 2300 m. The capability of the dual-frequency Doppler lidar system has been verified.

AB - A dual-frequency continuous wave Doppler lidar for long-distance and high-precision velocity measurement is experimentally demonstrated in this article. The lidar system uses the optical heterodyne detection method to avoid complicated optical coherent configuration. All Phase Fast Fourier Transform and Chirp-Z Transform are used to obtain the Doppler frequency shift. The maximum of the calculated Doppler shift was 999.83 Hz with the frequency resolution of 0.54 Hz, and the corresponding theoretical velocity was determined to be 749.87 m/s. During the experiment, the speed of the car was successfully measured in the outdoor environment, the frequency and velocity resolutions were less than 0.5 Hz and ± 0.2 m/s, respectively, and the detection distance of moving and stationary targets reached 1100 m and 2300 m. The capability of the dual-frequency Doppler lidar system has been verified.

KW - Doppler shift

KW - chirp–z transform

KW - dual-frequency laser

KW - hypersonic

KW - lidar

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JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

IS - 5

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A dual-frequency continuous wave doppler lidar for velocity measurement at far distance

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Keywords

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