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Influence of oceanic turbulence on propagation characteristics of Gaussian array beams

机译:海洋湍流对高斯阵列波束传播特性的影响

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摘要

Based on the power spectrum of oceanic turbulence proposed by Nikishov, the influence of oceanic optical turbulence on propagation of Gaussian array beams is studied in detail by using five propagation characteristic parameters (i.e., mean-squared beam width, Rayleigh range, turbulence distance, power in the bucket and Strehl ratio). It is shown that the influence of oceanic optical turbulence on propagation of laser beams becomes stronger as r (ratio of temperature to salinity contribution to the refractive index spectrum) and χ_T (rate of dissipation of mean-squared temperature) increase and ε (rate of dissipation of kinetic energy per unit mass of fluid) decreases, which is in agreement with the further analysis of oceanic turbulence shown in this paper. Furthermore, it is concluded that propagation of laser beams is more affected by oceanic optical turbulence in abyssal region than that in active region or oceanic surface.
机译:基于尼基佐夫提出的海洋湍流功率谱,利用五个传播特性参数(均方光束宽度,瑞利范围,湍流距离,功率),详细研究了海洋光学湍流对高斯阵列光束传播的影响。在桶和斯特雷尔比率)。结果表明,随着r(温度与盐度的比值对折射率谱的贡献)和χ_T(均方温度的耗散率)和ε(光速的变化率)的增加,海洋光学湍流对激光束传播的影响变得更强。每单位质量流体的动能耗散减小),这与本文中对海洋湍流的进一步分析是一致的。此外,得出的结论是,深海区域的激光束传播比活动区域或海洋表面的激光束传播受海洋光学湍流的影响更大。

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