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Proceedings Paper

Decoupling atmosphere Rayleigh-Brillouin scattering spectrum in kinetic regime
Author(s): Jingjing Liu; Jiale Kang; Dengxin Hua; Tingyao He; Qing Yan; Jun Wang
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Paper Abstract

In the detection of atmospheric temperature profile by Rayleigh scattering, the influence of Brillouin scattering is usually ignored and the accuracy of temperature detection is reduced. Current researches on Brillouin scattering are mainly focusing on hydrodynamic and Knudsen regime, few researches has been done on the kinetic regime. In order to improve the precision of atmospheric temperature measurement, a mathematical model based on three Gussian distributions was adopted to study the Rayleigh-Brillouin scattering spectrum (RBS) in kinetic regime, the mixed Rayleigh and Brillouin signal in atmospheric echo signal is separated to obtain independent Rayleigh and Brillouin spectrum. Finally, the experimental platform was set up to control simulation of atmospheric environment system and establishes a hyperspectral splitting optical system based on Fabry-Perot interferometer. The spectrum obtained by the experiment was used to optimize the mathematical model and improve the detection accuracy of atmospheric temperature profiles.

Paper Details

Date Published: 7 March 2019
PDF: 6 pages
Proc. SPIE 11053, Tenth International Symposium on Precision Engineering Measurements and Instrumentation, 110533F (7 March 2019); doi: 10.1117/12.2512152
Show Author Affiliations
Jingjing Liu, Xi'an Univ. of Technology (China)
Jiale Kang, Xi'an Univ. of Technology (China)
Dengxin Hua, Xi'an Univ. of Technology (China)
Tingyao He, Xi'an Univ. of Technology (China)
Qing Yan, Xi'an Univ. of Technology (China)
Jun Wang, Xi'an Univ. of Technology (China)

Published in SPIE Proceedings Vol. 11053:
Tenth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Jie Lin, Editor(s)

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