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首页> 外文会议>Conference on Lidar Remote Sensing for Environmental Monitoring IV; Aug 3-4, 2003; San Diego, California, USA >Raman water-vapor lidar implemented on an existing lidar system in the southern tropics
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Raman water-vapor lidar implemented on an existing lidar system in the southern tropics

机译：在热带南部现有的激光雷达系统上实施的拉曼水汽激光雷达

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摘要

A Raman lidar dedicated to night-time tropospheric water-vapor high-resolution measurements is currently being developed at Reunion island in the south-western Indian Ocean. To our knowledge, it is the first permanent instrument of its kind in this tropical region. The geophysical and instrumental interests and issues on the radiative, dynamical and chemical plans for such a measurement, specially in the tropics, are obvious. The choice of a visible laser excitation wavelength was initially a constraint, in view of the weakness of the Raman scattering process that is the basis of the development of this instrument, but many arguments also plead for such a choice. After describing the water-vapor measurement method of this lidar, which is straightforward in principle, we stress on the main delicate underlying issues related to this method. A precise description of the optical parts of the lidar system is then given that emphasizes the importance of the rejection of the elastically backscattered signals in the Raman channels. Finally, we list the most important future works concerning the validation and calibration stages of this instrument that is intended to become an atmospheric surveillance instrument on a medium term.
机译：目前正在印度洋西南部的留尼汪岛开发一种专门用于夜间对流层水蒸气高分辨率测量的拉曼激光雷达。据我们所知，它是该热带地区首个此类永久性工具。对于这种测量，特别是在热带地区，地球物理和仪器方面的利益以及有关辐射，动力学和化学计划的问题是显而易见的。鉴于拉曼散射过程的弱点是仪器发展的基础，可见光激光激发波长的选择最初是一个限制，但是许多争论也为这种选择辩护。在描述了这种激光雷达的水汽测量方法后，从原理上讲它很简单，我们重点介绍与该方法有关的主要细微的潜在问题。然后给出了激光雷达系统光学部分的精确描述，强调了拉曼通道中弹性反向散射信号被拒绝的重要性。最后，我们列出了与该仪器的验证和校准阶段有关的最重要的未来工作，该仪器打算在中期成为大气监测仪器。

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