摘要
单光子激光雷达相较于传统线性激光雷达,具备更高的探测灵敏度、时间分辨率和光子利用率,在遥感测绘、军事侦查、伪装识别等领域发挥着重要作用。介绍了一种1.5μm波段全国产化单光子测距系统,自主构建1.5μm高紧凑光纤光源系统,具备自适应降噪、降频功能,能降低系统暗计数并消除模糊距离,高精度时间数字转换器(time-to-digital converter,TDC)与单光子探测系统进行系统集成以控制整体体积,非共轴收发系统结构简单、调节方便、系统噪声低。在光源输出功率仅为10 mW,单脉冲能量为200 nJ的条件下,实现了1.7 km单光子测距。在多层伪装网覆盖目标探测识别实验中,可透过多层伪装网准确识别目标信息,探测精度优于0.1 m。实验结果表明,目前全国产化系统已具备较高的性能,在功耗、体积、重量方面优势明显,未来有望在众多领域发挥重要作用。
Single-photon lidar offers superior detection sensitivity,temporal resolution,and photon utilization compared to traditional linear lidar systems.It is increasingly important in fields such as remote sensing and mapping,military reconnaissance,and camouflage recognition.A domestically developed single-photon ranging system operating at the 1.5 μm wavelength was presented,in which a compact 1.5 μm fiber laser source with adaptive noise reduction and frequency modulation features was integrated to reduce system dark counts and eliminate range ambiguity.High-precision time-to-digital converters(TDC) were used to control system size,while the non-coaxial transceiver design ensured simple structure,easy adjustment and low noise.The single-photon ranging of 1.7 km was achieved with an optical power output of only 10 mW and a single pulse energy of 200 nJ.Experiments with multi-layer camouflage net-covered targets demonstrate the accurate target identification through the camouflage,with a detection precision better than 0.1 m.The results indicate that the domestically developed system performs well,showing significant advantages in power consumption,size,and weight,and is expected to paly an important role in many fields in the future.
作者
邓阳阳
马必杨
侯大禄
肖杰峰
欧洋
熊玉朋
DENG Yangyang;MA Biyang;HOU Dalu;XIAO Jiefeng;OU Yang;XIONG Yupeng(College of Intelligent Science,National University of Defense Technology,Changsha 410073,China;Hunan Key Laboratory of Ultra-Precision Machining Technology,Changsha 410073,China;State Key Laboratory of Science and Technology on Integrated Logistics Support,Changsha 410073,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,China;College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China;Basic Education College,National University of Defense Technology,Changsha 410073,China)
出处
《应用光学》
北大核心
2025年第3期522-529,共8页
Journal of Applied Optics
基金
国防科技大学自主创新基金(24-ZZCX-JDZ-26)
装备状态感知与敏捷保障全国重点实验室基金(WDZC20245250308)。
关键词
激光雷达
单光子探测
单光子测距
模糊距离
lidar
single-photon detection
single-photon ranging
range ambiguity
