Laser & Optoelectronics Progress, Volume. 62, Issue 19, 1906007(2025)
Research and Development Progress of Underwater Laser Ranging Technology (Invited)
Fig. 4. Underwater laser ranging system based on phase detection method. (a) Block diagram of setup for underwater FMCW ranging experiments [28]; (b) FMCW processing steps [28]; (c) layout of intensity modulation light source with wavelength of 532 nm based on intensity modulation [31]; (d) laser phase based underwater ranging system based on intensity modulation[32]
Fig. 5. Underwater laser ranging system based on triangulation method. (a) Principle of vertical triangulation ranging[35]; (b) principle of oblique triangulation ranging[35]; (c) schematic diagram of calibration for triangulation ranging system[38]; (d) underwater 3D reconstruction system based on triangulation and photometric stereo[42]; (e) underwater 3D reconstruction system based on triangulation and multispectral photometric stereo[43]
Fig. 6. Underwater laser ranging system based on photon counting method. (a) Principle of underwater photon counting ranging[46]; (b) principle of TCSPC; (c) schematic diagram of underwater single-photon LiDAR[49]; (d) photograph of underwater single-photon LiDAR[49]; (e) photon counting reconstruction results based on CASPI[55]
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Haonan Shi, Kaihua Zhao, Haofeng Hu, Jingsheng Zhai, Xiaobo Li. Research and Development Progress of Underwater Laser Ranging Technology (Invited)[J]. Laser & Optoelectronics Progress, 2025, 62(19): 1906007
Category: Fiber Optics and Optical Communications
Received: Jun. 19, 2025
Accepted: Jul. 16, 2025
Published Online: Sep. 26, 2025
The Author Email: Xiaobo Li (lixiaobo@tju.edu.cn)
CSTR:32186.14.LOP251499