Barton-Grimley Rory A, Stillwell Robert A, Thayer Jeffrey P
Opt Express. 2018 Oct 1;26(20):26030-26044. doi: 10.1364/OE.26.026030.
The application of time-correlated single photon counting hardware and techniques to atmospheric lidar is presented. The results establish the viability of adapting photon time-tagging techniques to atmospheric lidar systems, facilitating high-range resolution (millimeter-level precision) and dynamic system observing capabilities that address the variety of atmospheric scatterers often present in atmospheric lidar profiles. The technique is demonstrated through measurements made by a high repetition rate, low pulse energy, elastic scattering, photon counting lidar. Detection probabilities with a non-zero system dead-time are derived and tested using acquired data. Atmospheric point cloud generation and the statistical implications on data retrievals utilizing this approach are presented. The results show an ability to preserve backscattered intensities while generating photon detections at picosecond resolution from a variety atmospheric scatterers.
介绍了时间相关单光子计数硬件和技术在大气激光雷达中的应用。结果证实了将光子时间标记技术应用于大气激光雷达系统的可行性，有助于实现高距离分辨率（毫米级精度）和动态系统观测能力，以应对大气激光雷达剖面图中经常出现的各种大气散射体。通过高重复率、低脉冲能量、弹性散射、光子计数激光雷达进行的测量展示了该技术。利用采集的数据推导并测试了具有非零系统死时间的检测概率。介绍了大气点云生成以及利用该方法对数据反演的统计意义。结果表明，在从各种大气散射体以皮秒分辨率生成光子检测的同时，能够保留后向散射强度。
