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湍流路径积分参量与湍流大气中光的传播效应
引用本文:饶瑞中.湍流路径积分参量与湍流大气中光的传播效应[J].光学学报,1997,17(1):9-85.
作者姓名:饶瑞中
作者单位:中国科学院安徽光学精密机械研究所
摘    要:根据光波在湍流大气中传播的理论分析了弱起伏条件下决定光波传播效应的折射率结构常数C^2n的各种路径积分参量之间的关系,导出了由光波的强度起伏所确定的等效折射率结构常数对计算大气相干长度与光波的到达角起伏,光束的扩展及漂移的相对偏差的表达式。针对折射率结构常数C^2n具有周期性,递减,递增和随

关 键 词:光传播  大气湍流  随机介质  大气光学
收稿时间:1996/2/1

Turbulence Path Integral Parameters and Light Propagation Effects in Turbulent Atmosphere
Rao Ruizhong.Turbulence Path Integral Parameters and Light Propagation Effects in Turbulent Atmosphere[J].Acta Optica Sinica,1997,17(1):9-85.
Authors:Rao Ruizhong
Abstract:The relationship between the light propagation effects in the turbulent atmosphere and the path integral parameters of the refractive index structure constant C 2 n is analyzed with the theory of light propagation in the turbulent atmosphere. The path integral parameters of C 2 n corresponding to the coherent length, the fluctuation of the arriving angle, the spreading and wandering of light beam are obtained with the equivalent refractive index structure constant derived from the measurement of the light intensity fluctuation, and the relative differences of these parameters with true values are evaluated. For periodic, decreasing, increasing, and random turbulent paths the relative differences are calculated as functions of various path parameters. The relative differences for the periodic turbulent path increase with the amplitude parameter and behave as damped oscillations with the frequency parameter. The relative differences for the decreasing and the increasing turbulent path are quite high. For a random turbulent path, the relative differences fluctuate with time series number and their statistical average values decrease with the number of the independent turbulent intervals. Suggestions for the accurate evaluation of the optical turbulence effects are given according to the results.
Keywords:light propagation    atmospheric turbulence    random media    
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