Study on Remote Sensing of Wind Field by Incoherent Doppler Lidar

非相干多普勒激光雷达风场遥感研究

• 批准号: 08455462
• 负责人: TSUKAMOTO Tatsuro
• 金额: $ 4.99万
• 依托单位: Tokyo University of Mercantile Marine
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455462/
• 关键词: Lidar; Doppler effect; Wind field measurement; Remote sensing; ライター

To know the wind field in local area is very useful from the standpoints of airline safety in the vicinity of airports and preservation of earth environment in the urban area. We have been developed a Doppler lidar system based on the edge technique for the detection of wind in the atmospheric boundary layr. In the system, we employed an injection seeded Nd : YAG laser as transmitter and a Fabry-Perot interferometer as high resolution optical filter. The work is progressing at a pace somewhat slower than the original schedule and we have just finish the fundamental stage. The outline will be described blow.(1) Adjustment of Fabry-Perot interferometer (FPI) : The spectrum of PZT-scanned output from the FPI was investigated with a He-Ne laser light which enters the FPI parallel to the mirror axis. Finesse is read out as about 40.(2) Observation of the interference pattern of FPI : The injection seeded Nd : YAG laser was transmitted to the FPI and the interference fringe pattern of FPI was observed by a CCD camera.(3) Simulation of the edge technique : Simulation of the edge technique performance was carried out to examine the effect of the laser spectral width and shape on transmission and sensitivity of the edge filter.We can obtain some information through exchange of opinion with many researchers about the latest trend of the Doppler lidar research. Based on the facts which have been clarified so far, we are considering the way to progress with this study hereafter.

从机场附近的航空安全和城市地区地球环境保护的角度来看，了解当地的风场是非常有用的。我们研制了一套基于边缘技术的多普勒激光雷达系统，用于探测大气边界层的风场。在该系统中，我们采用了注入种子Nd：YAG激光器作为发射器和法布里-珀罗干涉仪作为高分辨率的光学滤波器。这项工作的进度比原定的时间表稍慢，我们刚刚完成基本阶段。下面将描述其概要。(1)法布里-珀罗干涉仪（FPI）的调整：用平行于镜轴进入FPI的He-Ne激光研究了FPI的PZT扫描输出的光谱。Finesse被读出为大约40。(2)FPI干涉条纹图的观察：将注入种子Nd：YAG激光入射到FPI上，用CCD摄像机观察FPI的干涉条纹图。(3)边缘技术的仿真：对边缘技术的性能进行了仿真，考察了激光光谱宽度和形状对边缘滤波器的透射率和灵敏度的影响，通过与多位研究人员的交流，了解了多普勒激光雷达研究的最新动向。根据迄今已澄清的事实，我们正在考虑今后如何推进这项研究。

项目成果

Murayama, T.et al.: "Aerosol Optical Properties in the Urban Mixing Layr Studied by Polarization Lidar with Meteorological Data" Advances in Atmospheric Remote Sensing with Lidar, Springer. 19-22 (1997)

Murayama, T.et al.：“利用偏振激光雷达和气象数据研究城市混合层中的气溶胶光学特性”激光雷达大气遥感进展，施普林格。

村山 利幸: "レーザーレーダーによる大気環境計測" 電子情報通信学会技術研究報告. 96. 41-46 (1996)

Toshiyuki Murayama：“利用激光雷达进行大气环境测量”IEICE 技术研究报告。 96. 41-46 (1996)。

村山 利幸: "エッジ法によるインコヒーレント・ドップラーライダーの開発" 第18回レーザセンシングシンポジウム予稿集. 103-104 (1997)

Toshiyuki Murayama：“使用边缘方法开发非相干多普勒激光雷达”第 18 届激光传感研讨会论文集 103-104 (1997)。

Murayama, T.et al.: "Development of Incoherent Doppler Lidar with the Edge Technique (in Japanese)" Proceedings of 18th Laser Sensing Symposium. 103-104 (1997)

Murayama, T.等人：“利用边缘技术开发非相干多普勒激光雷达（日语）”第 18 届激光传感研讨会论文集。

T.Murayama et.al.: "Aerosol Optical Properties in the Urban Mixing Layer Studied by Polarization Lidar with Meteorological Data" Advances in Atmospheric Remote Sensing with Lidar (Springer). (1997)

T.Murayama 等人：“通过偏振激光雷达和气象数据研究城市混合层中的气溶胶光学特性”激光雷达大气遥感进展（Springer）。