Study on the Scintillation for Optical Wave Propagation in the Slant Path Through the Atmospheric Turbulence |
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Authors: | Zhimin Luo Lixin Guo Zhensen Wu and Zhenwei Zhao |
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Institution: | (1) School of Science, Box 273, Xidian University, Xi’an, Shaanxi, 710071, China;(2) School of Microelectronics, Xidian University, Xi’an, Shaanxi, 710071, China;(3) China Research Institute of Radio Wave Propagation, Beijing, 102206, China; |
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Abstract: | Based on the theory of optical wave propagation in the slant path and the ITU-R turbulence structure constant model which is altitude dependent, the modified Rytov method, which is applicable to the optical wave propagation in the horizontal path, is extended to the propagation in the slant path. According to the spectrum model with non-zero inner scale, the scintillation index as a function of the Rytov variance is obtained from weak to strong fluctuation regions with plane wave and sphere wave incidence, respectively. Finally, the scintillation index with different zenith angles is analyzed, and comparison between the results of the modified method and experimental measurements is given and discussed in detail. |
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Keywords: | atmospheric turbulence inner scale effect propagation in the slant path optical scintillation modification of the Rytov method |
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