Analysis of Inner-Scale Effect on Atmosphere Scintillation for Infrared Laser Beam Propagating on Earth-Space Paths

Authors: Yang Ruike¹; Sun Xiuhong²; Wu Zhensen²; Hao Yue³; Wu Jian⁴

Source: International Journal of Infrared and Millimeter Waves, Volume 26, Number 3, March 2005 , pp. 467-481(15)

Publisher: Springer

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Abstract:

On Earth-space paths, based on ITU-R C_n² (h) model, by means of a modification of the Rytov method that incorporates an amplitude spatial frequency filter function under strong fluctuation conditions, considering atmospheric turbulence inner-scale, an expression is developed for the scintillation index of a visible or a near and middle infrared laser beam wave that is valid under moderate to strong irradiance fluctuations. The quantitative analyses of scintillation index are done by this analytic model for laser Gaussian collimated beam wave at visible or near and middle infrared wave band. The results agree with theoretic analysis scintillation. This scintillation model can be converted into a Gaussian beam wave model with finite inner-scale on horizontal sight paths of invariable C_n².

Keywords: Infrared laser beam; propagation; atmosphere turbulence; inner-scale; scintillation index; Earth-space paths

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s10762-005-3446-6

Affiliations: 1: School of Science, Box 273, Email: ruikeyang@sohu.com 2: School of Science, Box 273, 3: School of Microelectronics, Xidian University, Xi’an, Shaanxi, 710071, China, 4: China Research Institute of Radio wave Propagation, Beijing, 102206, China,

Publication date: 2005-03-01