| 云的多次散射对激光雷达测量结果影响的研究 |
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| 引用本文： | 李颖颖,孙东松,王珍珠,沈法华,周小林,董晶晶. 云的多次散射对激光雷达测量结果影响的研究[J]. 激光技术, 2008, 32(6): 611-611 |
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| 作者姓名： | 李颖颖 孙东松 王珍珠 沈法华 周小林 董晶晶 |
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| 作者单位： | 中国科学院,安徽光学精密机械研究所,合肥,230031;中国科学院,安徽光学精密机械研究所,合肥,230031;中国科学院,安徽光学精密机械研究所,合肥,230031;中国科学院,安徽光学精密机械研究所,合肥,230031;中国科学院,安徽光学精密机械研究所,合肥,230031;中国科学院,安徽光学精密机械研究所,合肥,230031 |
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| 摘 要： | 为了更加准确地获得大气消光系数和后向散射系数,利用半解析Monte Carlo方法对云的大气多次散射激光雷达回波信号进行了模拟计算。分析了激光雷达接收视场角及光学厚度对多次散射回波信号的影响及水云和卷云多次散射因子与光学厚度的关系。激光雷达测量数据的对比结果表明,多次散射对卷云和水云消光系数影响较明显,而对后向散射系数的影响可以忽略。
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| 关 键 词： | 大气与海洋光学 激光雷达 云 多次散射 Monte Carlo 模拟 消光系数 |
| 收稿时间： | 2007-08-02 |
| 修稿时间： | 2007-10-16 |
Study of clouds multiple-scattering influence on lidar measurement |
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| LI Ying-ying,SUN Dong-song,WANG Zhen-zhu,SHEN Fa-hua,ZHOU Xiao-lin,DONG Jing-jing. Study of clouds multiple-scattering influence on lidar measurement[J]. Laser Technology, 2008, 32(6): 611-611 |
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| Authors: | LI Ying-ying SUN Dong-song WANG Zhen-zhu SHEN Fa-hua ZHOU Xiao-lin DONG Jing-jing |
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| Affiliation: | LI Ying-ying,SUN Dong-song,WANG Zhen-zhu,SHEN Fa-hua,ZHOU Xiao-lin,DONG Jing-jing(Anhui Institute of Optics , Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China) |
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| Abstract: | Lidar multiple scattering return from clouds was simulated by means of semianalytic Monte Carlo method in order to obtain atmosphere extinction and backscattering coefficeint exactly.The influence of the receiver field of view and medium optical depth on multiple scattering was discussed.The relation between cirrus/water clouds of multiple scattering factor and optical depth was studied.The results show that the presence of the multiple scattering can lead to an underestimation of the extinction coefficient... |
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| Keywords: | atmospheric and ocean optics lidar cloud multiple scattering Monte Carlo simulation extinction coefficient |
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