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Analysis of an optical turbulence profile using complete ensemble empirical mode decomposition

机译:使用完全集成的经验模态分解分析光学湍流剖面

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We obtain an intrinsic optical turbulence model using a data-driven method named complete ensemble empirical mode decomposition. First, the measured profile of a refractive index structure parameter is decomposed into a set of intrinsic mode functions and a residue. The components are tested against white noise to determine the statistical significance. Meanwhile, the physical meanings of the IMFs are revealed using meteorological data that agrees with previous research. Second, the effect of noisy oscillations, quasi-cyclical variations, and the trend on the overall profile are evaluated by the variance contribution rate. Third, the intrinsic optical turbulence model is defined. The combination of different IMFs with the residue forms intrinsic optical turbulence profiles, by which the stratification structures on different scales are embedded into the model. Comparison with other models highlights the virtue of the intrinsic optical turbulence model. (C) 2016 Optical Society of America
机译:我们使用一种称为完全集成经验模态分解的数据驱动方法,获得了固有的光学湍流模型。首先,将所测得的折射率结构参数的轮廓分解为一组固有模式函数和残差。对组件进行白噪声测试以确定统计显着性。同时,IMF的物理意义是通过使用与先前研究一致的气象数据来揭示的。其次,通过方差贡献率评估噪声振荡,准周期变化和趋势对总体轮廓的影响。第三,定义了固有光学湍流模型。不同IMF与残渣的结合形成了固有的光学湍流轮廓,由此将不同尺度的分层结构嵌入到模型中。与其他模型的比较突出了固有光学湍流模型的优点。 (C)2016美国眼镜学会

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