| 喇曼方法测量激光雷达常数研究 |
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| 引用本文： | 闫顺生,张敬东,黄洪云,户立春,边静. 喇曼方法测量激光雷达常数研究[J]. 激光技术, 2010, 34(2): 221-223. DOI: 10.3969/j.issn.1001-3806.2010.02.021 |
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| 作者姓名： | 闫顺生 张敬东 黄洪云 户立春 边静 |
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| 作者单位： | 1.唐山学院基础教学部, 唐山, 063000; |
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| 摘 要： | 为了标定激光雷达常数,在大气水平分布均匀的天气下,利用激光雷达喇曼散射回波不受大气气溶胶后向散射影响的特点,对其水平方向距离订正回波进行线性拟合,结合N2分子喇曼后向散射截面和分子数密度就可以得到激光雷达常数;同时对这种方法进行了数值模拟,相对误差为4.688%,理论推导和数值模拟均证明该方法是可行的。结果表明,激光雷达常数的获取为激光系统的评估以及激光雷达方程的参量反演将带来便利。
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| 关 键 词： | 大气与海洋光学 激光雷达常数 线性拟合 喇曼散射 |
| 收稿时间： | 2008-12-15 |
| 修稿时间： | 2009-02-17 |
Studies for Measurement of Lidar Constant by Raman Method |
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| Abstract: | The characteristic of Raman lidar return signals are not affected by aerosol backscattering is used to calibrate lidar constant. Under the condition of homogenous horizontal atmosphere, the lidar constant can be calculated with transcendent knowledge about Raman diffusion back scattering cross section and number density of N2. Numerical simulation is analyzed and relative error of lidar constant error is 4.688%. Theoretical derivation and numerical simulation indicate the feasibility of the method. The achievement of lidar constant will offer convenience for retrieve of aerosol in lidar equation and evaluation of lidar system.Key words: atmospheric and ocean optics; lidar constant; Raman diffusion; numerical simulation |
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| Keywords: | atmospheric and ocean optics lidar constant numerical simulation Raman diffusion |
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