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25 October 2016 Measuring outer scale in atmospheric optical turbulence from the point view of spatial correlation function
Qian Wang, Hai-Ping Mei, Xian-Mei Qian, Rui-Zhong Rao
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Proceedings Volume 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage; 101580V (2016) https://doi.org/10.1117/12.2246830
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China
Abstract
A theory about scales in atmospheric optical turbulence vortex from the point view of spatial correlation function is described. Then an experiment is carried out to prove this theory by the fiber optical turbulence sensor array near the ground. Results show that the outer scale has a mean value of 0.62m and varies from 0.34m to 0.95m by doing a nonlinear fitting on spatial correlation functions. With this method, the value of the outer scale can be given directly without any hypothesis when the optical turbulence is well-developed. A question about how the trend of the spatial correlation function show when the displacement approaches the outer scale is solved. This research can be regarded as a progress about understanding the characters of spatial correlation function in optical turbulence.
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Qian Wang, Hai-Ping Mei, Xian-Mei Qian, and Rui-Zhong Rao "Measuring outer scale in atmospheric optical turbulence from the point view of spatial correlation function", Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 101580V (25 October 2016); https://doi.org/10.1117/12.2246830
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KEYWORDS
Atmospheric optics
Atmospheric sensing
Optical turbulence
Correlation function
Fiber optics sensors
Optical arrays
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