Laser & Optoelectronics Progress, Volume. 62, Issue 1, 0100003(2025)
Research Progress of Long-Distance and High-Precision Frequency-Modulated Continuous Wave Laser Measurement Technology
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.
Get Citation
Copy Citation Text
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
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)
CSTR:32186.14.LOP240683