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首页> 外文期刊>Optical and quantum electronics >Plane wave scintillation index in slant path atmospheric turbulence: closed form expressions for uplink and downlink
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Plane wave scintillation index in slant path atmospheric turbulence: closed form expressions for uplink and downlink

机译：倾斜路径大气湍流的平面波闪烁指数：上行链路和下行链路的闭合形式表达式

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摘要

The scintillation index (SI) is an important issue in studying the effect of the atmospheric turbulence in light wave propagation. As the computation time is important in case of mobile applications, a closed form for the SI of slant path is more attractive than its integral form. In a previous work (Fayed et al. in Opt Eng 55:056113, 2016), we derived the slant path SI in a closed form for spherical waves proposing a polynomial model for the refractive index structure parameter. In this paper, closed form expressions for uplink and downlink slant path SI are derived from the integral forms using the polynomial model of refractive index structure parameters for a plane wave propagating through atmospheric turbulence. The obtained results reveal the effects of propagation distance, transmitter/ receiver height and elevation angle on the uplink and downlink SI. A comparison between uplink and downlink SI is carried out. The derived expressions for the plane wave are compared with that previously derived for the spherical wave. The obtained results demonstrate a way to improve the uplink SI of the plane wave by increasing the transmitter height to 150 m.
机译：闪烁指数（SI）是研究大气湍流在光波繁殖中的影响的重要问题。由于在移动应用的情况下计算时间很重要，倾斜路径的SI的闭合形式比其整体形式更具吸引力。在以前的工作中（Fayed等人。在Opt Eng 55：056113,2016）中，我们以封闭形式衍生的倾斜路径Si，用于施加折射率结构参数的多项式模型。在本文中，用于上行链路和下行链路倾斜路径Si的闭合形式表达式使用用于通过大气湍流传播的平面波的折射率结构参数的多项式模型来源于整体形式。所得结果揭示了传播距离，发射机/接收器高度和仰角在上行链路和下行链路Si上的影响。执行上行链路和下行链路SI之间的比较。将平面波的衍生表达与预先导出的球形波进行比较。所获得的结果证明了通过将发射器高度增加到150μm来改进平面波的上行链路SI的方法。

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