摘要
根据湍流大气中激光对数强度的最低几阶中心矩建立了一种最大似然概率分布模型，该模型可以方便和准确地描述实际概率分布。根据实验结果分析了激光对数强度的概率分布的偏斜度和陡峭度的特征。发现在弱起伏条件下，对数强度的概率分布一般接近于正态分布，当偏离正态分布时，概率密度分布的偏斜度总是为负，陡峭度总是为正。
A probability distribution model for the light log intensity fluctuation in turbulent atmosphere was introduced by taking consideration of the skewness and the kurtosis. The model is suitable for fitting the probability distrbution from experimental data. It was found experimentally that under the weak fluctuation condition the probability distribution is close to a normal distrbution when the turbulence is well deveploped, otherwise the ditribution will deviate from the normal distribution and the skewness of the log intensity probability distribution is alwsys negative and the kurtosis positive.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第1期81-86,共6页
Acta Optica Sinica
关键词
光传播
大气湍流
闪烁
概率分布
激光
light propagation, trubulence, scintillation, probability distribution.
