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全天时大气温度探测的纯转动拉曼激光雷达系统设计与仿真

Design and Simulation of Pure Rotational Raman Lidar System for Daytime Detection of Atmospheric Temperature

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摘要

提出了一种全天时大气温度探测的纯转动拉曼激光雷达系统,选用Nd∶YAG脉冲激光器的四倍频输出266.0 nm作为激励波长,避开了强烈的太阳背景光对系统探测大气温度的影响。设计了一种新型三次衍射式双光栅多色仪作为激光雷达的分光系统。仿真结果表明,双光栅多色仪可实现Stokes与Anti-Stokes高低量子数通道转动拉曼谱线的有效提取,对米-瑞利弹性散射信号的抑制率可达到60~70 dB。充分考虑臭氧吸收和荧光对系统探测性能的影响,所设计的日盲紫外纯转动拉曼激光雷达采用模拟探测模式可在12 min的积分时间内实现2.2 km高度范围内大气温度的全天时探测。

Abstract

A pure rotational Raman lidar for measuring atmospheric temperature on daytime is proposed. The quadruple frequency of 266.0 nm of Nd∶YAG pulsed laser is selected as the transmitter wavelength, which avoids the effect of solar background light on the detection of atmospheric temperature. A new type of triple-diffraction double grating polychromator is designed as the spectroscopic system of lidar. Simulation results show that the designed double grating polychromator can achieve the extraction of Stokes and Anti-Stokes pure rotational Raman signals from high and low quantum number channels. The suppression rate of the Mie-Rayleigh scattering signals is up to 60-70 dB. Meanwhile, considering the effects of the ozone absorption and fluorescence on the detection performance of the system, the designed solar-blind ultraviolet pure rotational Raman lidar system with the analog detection mode can detect atmospheric temperature in the range of 2.2 km in 12 minutes′ integration time.

Newport宣传-MKS新实验室计划
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中图分类号:TH741

DOI:10.3788/aos201939.0301004

所属栏目:大气光学与海洋光学

基金项目:国家自然科学基金(41775035,41627807)、中国博士后基金(2014M560799)

收稿日期:2018-09-10

修改稿日期:2018-10-23

网络出版日期:2018-11-01

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高飞:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
黄波:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
石冬晨:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
朱青松:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
张锐:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
汪丽:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
李仕春:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048
华灯鑫:西安理工大学机械与精密仪器工程学院, 陕西 西安 710048

联系人作者:华灯鑫(dengxinhua@xaut.edu.cn)

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引用该论文

Gao Fei,Huang Bo,Shi Dongchen,Zhu Qingsong,Zhang Rui,Wang Li,Li Shichun,Hua Dengxin. Design and Simulation of Pure Rotational Raman Lidar System for Daytime Detection of Atmospheric Temperature[J]. Acta Optica Sinica, 2019, 39(3): 0301004

高飞,黄波,石冬晨,朱青松,张锐,汪丽,李仕春,华灯鑫. 全天时大气温度探测的纯转动拉曼激光雷达系统设计与仿真[J]. 光学学报, 2019, 39(3): 0301004

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