Development of a Random modulated CW LIDAR for measuring atmospheric molecules related to earth warming

开发用于测量与地球变暖相关的大气分子的随机调制连续激光雷达

• 批准号: 14550045
• 负责人: UCHIUMI Michihiro
• 金额: $ 2.3万
• 依托单位: Ariake National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550045/
• 关键词: CW laser; pseudo random modulated; Earth warming molecules; laser radar; LIDAR; Differential Absorption LIDAR; CO2; water vapor

The aim of this research is to investigate theoretically and experimentally the possibility of realization of RM-CW LIDARs, pseudo-randomly modulated CW laser radars, for measuring the atmospheric gas molecules related to earth warming and establish an RM-CW LIDAR mainly active in the wavelength region of the near infra-red. As the results of the theoretical simulation, it is found that it is possible to make an RM-CW LIDAR for atmospheric aerosol and water vapor. For the DIAL, differential absorption LIDAR, a laser emitting system with two CW lasers was made. A receiver is constructed with a 20cm diameter telescope, a PMT and an interference filter. In order to modulate the CW laser, the AOM devices were used. The CW lasers were tuned to the absorption lines of water vapor. The laser modulation was performed by a data generator based on the maximum shift register sequence.

本研究的目的是从理论和实验上探讨实现伪随机调制连续波激光雷达（RM-CW LIDAR）测量与地球变暖有关的大气气体分子的可能性，建立一种主要工作在近红外波段的RM-CW LIDAR。理论模拟的结果表明，利用激光雷达探测大气气溶胶和水汽是可行的。针对差分吸收激光雷达（DIAL），研制了一套由两个连续激光器组成的激光发射系统.接收机由20厘米口径望远镜、光电倍增管和干涉滤光片组成。为了对连续激光进行调制，使用了声光调制器件。CW激光器被调谐到水蒸气的吸收线。激光调制由基于最大移位寄存器序列的数据发生器执行。

项目成果

Study on a Daytime Measurement of Atmospheric Gases by Pseudo Random Modulated CW LIDAR

伪随机调制连续激光雷达白天测量大气气体的研究

• 发表时间: 2005
• 期刊: Research Reports of the Ariake National College of Technology, (in Japanese) 41

擬似ランダム変調CWライダーの昼間計測の検討

伪随机调制连续激光雷达白天测量研究

• 发表时间: 2005
• 期刊: 有明工業高等専門学校紀要 41号
• 作者: 内海通弘;野原明信
• 通讯作者: 野原明信

M系列擬似ランダム変調CWレーザレーダの特性解析

M系列伪随机调制连续激光雷达特性分析

• 发表时间: 2003
• 期刊: 有明工業高等専門学校紀要 39号
• 作者: 内海通弘;Michihiro Uchiumi;内海通弘
• 通讯作者: 内海通弘

Development of a Tunable Laser Source for DIAL measurements of the Atmospheric CO_2 and CH_4

开发用于大气 CO_2 和 CH_4 DIAL 测量的可调谐激光源

• 发表时间: 2003
• 期刊: Proceedings of the Third Asian Pacific Laser Symposium 3
• 作者: M.Fujiwara;N.J.Vasa;S.Yokoyama;M.Uchiumi;M.Maeda;O.Uchino
• 通讯作者: O.Uchino

N.J.Vasa, M.Fujiwara, S.Yokoyama, M.Uchiumi, M.Maeda: "Tuning of a Ti3+: sapphire laser by an electro-optic beam deflection method."Applied Optics. 42,27. 5512-5516 (2003)

N.J.Vasa、M.Fujiwara、S.Yokoyama、M.Uchiumi、M.Maeda：“通过电光光束偏转方法调整 Ti3：蓝宝石激光器。”应用光学。