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Chin. Phys. B, 2021, Vol. 30(6): 064206    DOI: 10.1088/1674-1056/abddab
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Multiple scattering and modeling of laser in fog

Ji-Yu Xue(薛积禹)1, Yun-Hua Cao(曹运华)1,†, Zhen-Sen Wu(吴振森)1, Jie Chen(陈杰)1, Yan-Hui Li(李艳辉)1, Geng Zhang(张耿)1, Kai Yang(杨凯)1, and Ruo-Ting Gao(高若婷)2
1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
2 School of Environment and Safety Engineering, North University of China, Taiyuan 030000, China
Abstract  When a laser is transmitted in fog, and the water droplets will scatter and absorb the laser, which affects the intensity of the laser transmission and the accuracy of radar detection. Therefore, it is of great significance to study the laser transmission in the fog. At present, the main method of calculating the scattering and attenuation characteristics of fog is based on the radiation transmission theory, which is realized by a large number of numerical calculations or physical simulation methods, which takes time and cannot meet the requirements for obtaining the fast and accurate results. Therefore, in this paper established are a new laser forward attenuation model and backward attenuation model in low visibility fog. It is found that in low visibility environments, the results calculated by the Monte Carlo method are more accurate than those from most of the existing forward attenuation models. For the cases of 0.86-μm, 1.06-μm, 1.315-μm, 10.6-μm typical lasers incident on different fogs with different visibilities, a backscatter model is established, the error between the fitting result and the calculation result is analyzed, the backward attenuation fitting parameters of the new model are tested, and a more accurate fitting result is obtained.
Keywords:  Mie theory      Monte Carlo method      engineering model      multiple scattering      error analysis  
Received:  10 December 2020      Revised:  13 January 2021      Accepted manuscript online:  20 January 2021
PACS:  42.55.-f (Lasers)  
  42.62.-b (Laser applications)  
  42.68.Jg (Effects of aerosols?)  
  42.68.Ay (Propagation, transmission, attenuation, and radiative transfer)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61571355 and 61401342).
Corresponding Authors:  Yun-Hua Cao     E-mail:  yhcao@mail.xidian.edu.cn

Cite this article: 

Ji-Yu Xue(薛积禹), Yun-Hua Cao(曹运华), Zhen-Sen Wu(吴振森), Jie Chen(陈杰), Yan-Hui Li(李艳辉), Geng Zhang(张耿), Kai Yang(杨凯), and Ruo-Ting Gao(高若婷) Multiple scattering and modeling of laser in fog 2021 Chin. Phys. B 30 064206

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