Toward increasing the accuracy and realism of future optical turbulence calculations
Toward increasing the accuracy and realism of future optical turbulence calculations
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提高未来光学湍流计算的准确性和真实性
DOI：
10.1007/s00703-004-0091-x
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发表时间：
2005
影响因子：
2
通讯作者：
A. Tunick
中科院分区：
文献类型：
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作者：
A. Tunick
由于激光和地-星通信应用的增加，对可靠的光学湍流信息的需求也在增长。光学湍流信息是重要的，因为它描述了可以降低电磁系统和传感器的性能的大气效应，例如，自由空间光通信和红外成像。然而，对过去选定的研究的分析表明，有一些领域（即，数据和模型），其中缺少光学湍流信息。例如，在丘陵地形、沿海地区和城市内，视线光学湍流数据与大气模型相结合的数量很少或根本不存在。此外，大部分现有的大气计算机模型被用来提供光学湍流的估计基本上是一维的性质，并假设在大面积均匀的湍流条件。因此，目前的光学湍流理论和模型可能是有缺陷的，并在不均匀（非均匀）的湍流条件下，如那些发生在城市环境或环境中的变化的地形和能量预算的错误。虽然预计环境物理学（和类似学科）的理论进展将成为这一领域许多新工作的催化剂，但在此期间，我们建议可以进行一些非常实用的计算研究，以扩展现有的低大气湍流和微气象计算，使其超出当前的限制。
Due to the increased use of laser and ground-to-satellite communications the need for reliable optical turbulence information is growing. Optical turbulence information is important because it describes an atmospheric effect that can degrade the performance of electromagnetic systems and sensors, e.g., free-space optical communications and infrared imaging. However, analysis of selected past research indicates that there are some areas (i.e., data and models) in which optical turbulence information is lacking. For example, line-of-sight optical turbulence data coupled with atmospheric models in hilly terrain, coastal areas, and within cities are few in number or non-existent. In addition, the bulk of existing atmospheric computer models being used to provide estimates of optical turbulence are basically one-dimensional in nature and assume uniform turbulence conditions over large areas. As a result, current optical turbulence theory and models may be deficient and in error for inhomogeneous (nonuniform) turbulence conditions, such as those that occur in urban environments or environments with changing topography and energy budgets. While it is anticipated that theoretical advances in environmental physics (and like disciplines) will be a catalyst for much new work this area, in the interim, we suggest that some very practical computational research can be performed to extend existing low-atmospheric turbulence and micrometeorological calculations beyond current limitations.