Laser & Optoelectronics Progress, Volume. 62, Issue 1, 0100003(2025)

Research Progress of Long-Distance and High-Precision Frequency-Modulated Continuous Wave Laser Measurement Technology

Yu Yang1,2, Mingliang Long2、***, Jie Ding1, Zhiyong Lu4, Haifeng Zhang2,3、**, Hongyu He4、*, Chenguang Wu2,5, Zhongping Zhang2, and Zhenxu Bai1
Author Affiliations
  • 1Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, China
  • 2Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China
  • 3Key Laboratory of Space Object and Debris Observation, China Academy of Sciences, Nanjing 210008, Jiangsu , China
  • 4Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 5College of Sciences, Shanghai University, Shanghai 200444, China
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    Frequency-modulated continuous wave (FMCW) laser measurement exhibits the advantages of high precision, wide range, good sensitivity, and strong anti-interference ability, enabling the noncontact measurements of high dynamic targets. This measurement technique has an important value in the large-scale precision measurement and machining and manufacturing fields and has become a hot spot in the laser precision and absolute measurements. Herein, the principle of FMCW laser measurement is introduced, current application requirements of long-distance measurements are analyzed, and key points of FMCW laser measurement at home and abroad are highlighted. In this study, an FMCW laser measurement system is developed based on high-sensitive coherent detection technology, which realizes the meter-level ranging of diffuse reflection targets at 10 km. Results provide an important reference for the future long-distance, high-precision FMCW laser measurement at home.

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    Yu Yang, Mingliang Long, Jie Ding, Zhiyong Lu, Haifeng Zhang, Hongyu He, Chenguang Wu, Zhongping Zhang, Zhenxu Bai. Research Progress of Long-Distance and High-Precision Frequency-Modulated Continuous Wave Laser Measurement Technology[J]. Laser & Optoelectronics Progress, 2025, 62(1): 0100003

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    Paper Information

    Category: Reviews

    Received: Feb. 18, 2024

    Accepted: May. 7, 2024

    Published Online: Dec. 9, 2024

    The Author Email: Mingliang Long (F_CEO_beifeng@126.com), Haifeng Zhang (hfzhang@shao.ac.cn), Hongyu He (hihehongyu@163.com)

    DOI:10.3788/LOP240683

    CSTR:32186.14.LOP240683

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