| 大气折射率结构常数CN2的研究 |
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| 引用本文： | 阎吉祥,周仁忠,俞信,毛节泰.大气折射率结构常数CN2的研究[J].北京理工大学学报(英文版),1993,2(1):19-26. |
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| 作者姓名： | 阎吉祥 周仁忠 俞信 毛节泰 |
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| 作者单位： | 北京理工大学工程光学系，北京理工大学工程光学系，北京理工大学工程光学系，北京大学地球物理系 北京 100081，北京 100081，北京 100081，北京 100871 |
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| 摘 要： | 根据温度变化规律,将地表上方几何高度71km 以下的大气分为6层,分别导出各层的温度和压强的计算公式,由这些公式计算出这一范围内任意高度的温度和压强值与美国标准大气表中所列值极好地吻合,据此可求出在自适应光学中起重要作用的大气折射率结构常数 C_N~2及相关长度 r_0的解析表达式。
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| 关 键 词： | 大气光学/自适应光学 折射率结构常数 相关长度 |
Study on the Refractive-Index Structure Coefficient CN2 |
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| Yan Jixiang,Zhou Renzhong,Yu Xin and Yao Jietai.Study on the Refractive-Index Structure Coefficient CN2[J].Journal of Beijing Institute of Technology,1993,2(1):19-26. |
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| Authors: | Yan Jixiang Zhou Renzhong Yu Xin and Yao Jietai |
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| Affiliation: | Department of Optical Engineering,Beijing Institute of Technology,Beijing 100081;Department of Optical Engineering,Beijing Institute of Technology,Beijing 100081;Department of Optical Engineering,Beijing Institute of Technology,Beijing 100081;Department of Geophysics,Peking University,Beijing 100871 |
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| Abstract: | Based on the regularities of temperature fluctuation,the atmo- sphere below an altitude of 71km above ground is divided into 6 sublayers. For each of them the calculation formulae of temperature and pressure are derived.The calculated results at any altitude in the range under considera- tion agree well with the values laid down in the table of“U.S.Standard At- mosphere”.From this the formula for the refractive-index structure coeffi- cient CN2,of much importance in the research of adaptive optics,is obtained for the corresponding altitudes. |
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| Keywords: | atmospheric optics/adaptive optics correlative length refractiveindex structure coefficient |
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