One step measurement of spatiotemporal distributions of refractive-index structure parameter using deep learning

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-09-17 DOI:10.1016/j.optlastec.2025.113921

Weihao Cheng , Yunyun Chen , Chuangan Yun , Zhiqin Huang , Fenping Cui , Bing Tu

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引用次数: 0

Abstract

Accurate measurement of the spatiotemporal distributions of the refractive-index structure parameter is crucial for characterizing atmospheric turbulence intensity and visualizing turbulent flow fields. However, traditional method remains limited by their computational complexity and inefficiency. In this paper, a One-step method for Refractive-index structure parameter Spatiotemporal distributions Measurement based on Deep Learning (DLORSM) is proposed. This method enables the direct one-step prediction of the spatial distributions of the refractive-index structure parameter in two directions using deep learning model and subsequently derives its temporal distributions. Numerical simulations are conducted to compare the DLORSM method with traditional method. The results show that DLORSM method achieves significantly lower errors of 0.17% and 0.16% in estimating spatiotemporal distributions, demonstrating its high accuracy and robustness. Experimental validation under real atmospheric conditions further confirms that DLORSM effectively captures the random fluctuations and structural characteristics of real atmospheric flow fields. This study lays a foundational framework and provides valuable insight into the intelligent measurement of spatiotemporal distributions of atmospheric refractive-index structure parameters using deep learning.

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利用深度学习一步测量折射率结构参数的时空分布

精确测量折射率结构参数的时空分布对于表征大气湍流强度和可视化湍流流场至关重要。然而，传统方法由于计算量大、效率低而受到限制。提出了一种基于深度学习的折射率结构参数时空分布一步测量方法。该方法利用深度学习模型直接一步预测折射率结构参数在两个方向上的空间分布，并推导出其时间分布。通过数值仿真对DLORSM方法与传统方法进行了比较。结果表明，DLORSM方法对时空分布的估计误差较低，分别为0.17%和0.16%，具有较高的精度和鲁棒性。在真实大气条件下的实验验证进一步证实了DLORSM能有效捕捉真实大气流场的随机波动和结构特征。该研究为利用深度学习技术智能测量大气折射率结构参数时空分布奠定了基础框架，并提供了有价值的见解。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems