Simulation study on the reflectance of cirrus clouds at the wavelength of 1.064μm
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1.
Anhui Institute of Optics and Fine Mechanics, Chinese Acadeny of Sciences, Hefei 230031, China;
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2.
University of Science and Technology of China, Hefei 230026, China;
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3.
Institute of Laser Researech, Shandong Academy of Sciences, Ji'nan 250014, China
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Corresponding author:
WEI He-li, hlwe@iaiomf.ac.cn
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Received Date:
2007-05-28
Accepted Date:
2007-09-10
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Abstract
In order to provide a theoretical basis for the actual application such as laser ranging and laser detection of the atmosphere,line-by-line integration was used to calculate the optical thickness of atmosphere molecular absorption.Discrete coordinate method was employed to study property of cirrus clouds at 1.064μm with the single scattering properties of cirrus clouds and the atmospheric absorption.The influence of cirrus clouds on laser transmission was analyzed by changing the incident angle,the observation location and some physical parameters of cirrus clouds.The results showed that the main effect of the cirrus clouds on laser transmission is scattering at 1.064μm and the absorption take a very small part in the extinction.The spatial distribution of the radiation is changed by scattering of the cirrus clouds significantly and the direction changes of scattering are decided by scattering phase function,observation zenith angles and scattering angle.This results are helpful to the actual application.
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