不同地区大气折射率结构常数分布特性及分析
Profile and character of atmospheric structure constants of refractive index
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摘要: 大气湍流对光波传播的影响主要是由于大气随机起伏的湍流引起折射率的随机起伏，破坏了光波的相干性。研究传输问题就是研究湍流所造成的折射率随机变化的规律。主要利用HTP-2型温度脉动探空仪对大气折射率结构常数进行了实地探测及计算分析。通过对大量探空实验数据的统计分析,分别得出了合肥地区和北方干旱地区(0～30km)大气折射率结构常数在不同季节的白天和夜间的分布廓线和分布特性，对合肥地区和北方干旱地区的大气湍流结构特性有了比较清晰的认识，为大气光学传输工程的应用和理论计算提供了参考。Abstract: Random fluctuation of turbulence brings random fluctuation of refractive index and makes atmosphere become a random fluctuation medium, which destroys the coherence of light-wave. Research of atmospheric turbulence is actually investigation of atmospheric refractive index.The atmospheric structure constant of refractive index is an important parameter of denoting atmospheric turbulence. In this paper, the atmospheric structure constant of refractive index is measured both noonday and at night everyday, at all seasons, respectively,using HTP-2 micro-thermal meter. The vertical profile of refractire index in Hefei and the North（0～30 km）is investigated by analysis of experimental data．
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