山东科学2025，Vol.38Issue(3)：64-71,8.DOI:10.3976/j.issn.1002-4026.2025052
水下光子计数三维成像激光雷达系统研制及实验验证
Development and experimental validation of an underwater photon-counting three-dimensional imaging LiDAR system
摘要
Abstract
Underwater three-dimensional(3D)imaging light detection and ranging(LiDAR)systems have the potential for accurately detecting underwater targets and mapping the seabed terrain,thus facilitating the development and utilization of marine resources.However,most existing underwater 3D imaging LiDAR systems suffer from large size and high power consumption,making them unsuitable for the operational requirements of underwater tasks.To overcome these issues,this study proposes a compact solution based on photon-counting technology that integrates single-point ranging with two-dimensional scanning to achieve 3D imaging.A compact underwater photon-counting 3D imaging LiDAR system was developed by optimizing optical and mechanical design,resulting in a device with a diameter of 165 mm and a length of 340 mm,considerably improving portability and underwater adaptability.A dual-axis synchronous scanning control method was implemented based on FPGA to achieve a scanning accuracy at the nanosecond level,ensuring precise alignment between the emitted pulse and measured target point.Laboratory water tank experiments revealed that the system has a detection capability exceeding 3.1 attenuation lengths.Furthermore,this system was used for underwater 3D imaging of a thruster model that validates its centimeter-level ranging accuracy.Owing to its strong compatibility,this system can be integrated into various underwater mobile platforms and holds strong potential for applications such as seabed topographic mapping,underwater cultural heritage detection,and underwater target identification.关键词
水下探测/三维成像/激光雷达/小型化Key words
underwater detection/three-dimensional imaging/LiDAR/miniaturization分类
海洋学引用本文复制引用
王章军,于洋,叶丁木,李辉,陈超,于长新..水下光子计数三维成像激光雷达系统研制及实验验证[J].山东科学,2025,38(3):64-71,8.基金项目
国家重点研发计划(2022YFC2807202、2021YFB3901304) （2022YFC2807202、2021YFB3901304）
国家自然科学基金(62401306、12204260) （62401306、12204260）
山东省自然科学基金(ZR2021QF055、ZR202110060024、ZR2022MD068、ZR2021QF015) （ZR2021QF055、ZR202110060024、ZR2022MD068、ZR2021QF015）
山东省重点研发计划(2022CXPT020、2022JMRH0102) （2022CXPT020、2022JMRH0102）
山东省高等学校青年创新科技计划项目(2023KJ326) （2023KJ326）
