Weibring Petter, Edner Hans, Svanberg Sune
Department of Physics, Lund Institute of Technology, P.O. Box 118, S-221 00 Lund, Sweden.
Appl Opt. 2003 Jun 20;42(18):3583-94. doi: 10.1364/ao.42.003583.
A mobile lidar (light detection and ranging) system for environmental monitoring is described. The optical and electronic systems are housed in a truck with a retractable rooftop transmission and receiving mirror, connected to a 40-cm-diameter vertically looking telescope. Two injection-seeded Nd:YAG lasers are employed in connection with an optical parametric oscillator-optical parametric amplification transmitter, allowing deep-UV to mid-IR wavelengths to be generated. Fast switching that employs piezoelectric drivers allows multiwavelength differential absorption lidar for simultaneous measurements of several spectrally overlapping atmospheric species. The system can also be used in an imaging multispectral laser-induced fluorescence mode on solid targets. Advanced LabVIEW computer control and multivariate data processing render the system versatile for a multitude of measuring tasks. We illustrate the monitoring of industrial atmospheric mercury and hydrocarbon emissions, volcanic sulfur dioxide plume mapping, fluorescence lidar probing of seawater, and multispectral fluorescence imaging of the facades of a historical monument.
本文介绍了一种用于环境监测的移动激光雷达（光探测和测距）系统。光学和电子系统安装在一辆卡车上，车顶有一个可伸缩的发射和接收镜，与一个直径40厘米的垂直观测望远镜相连。该系统采用两台注入种子Nd:YAG激光器与一个光学参量振荡器-光学参量放大发射器，可产生深紫外到中红外波长的光。采用压电驱动器的快速切换功能可实现多波长差分吸收激光雷达，用于同时测量几种光谱重叠的大气成分。该系统还可用于对固体目标进行成像多光谱激光诱导荧光模式的测量。先进的LabVIEW计算机控制和多变量数据处理使该系统适用于多种测量任务。我们展示了该系统在工业大气汞和碳氢化合物排放监测、火山二氧化硫羽流测绘、海水荧光激光雷达探测以及历史古迹外墙多光谱荧光成像等方面的应用。
