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《Laser & Infrared》 2016-10
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Simulation and calculation of water vapor absorption attenuation based on measured data

SONG Fu-yin;LU Yuan;QIAO Ya;TAO Hui-feng;YANG Xing;CHEN Jie;Key Laboratory of Infrared and Low Temperature Plasma of Anhui Province,State Key Laboratory of Pulsed Power Laser Technology,Electronic Engineering Institute;Institute of Electronics and Information Engineering,Anhui Jianzhu University;  
In calculating infrared radiation transmission,it often has large deviations by only using empirical formula. It is complicated to use MODTRAN and difficult to transplant it to other infrared systems. Therefore,by using molecular single absorption method a new calculating method is proposed based on lots of measured atmospheric data,absorption coefficients of water vapor at different temperatures. The analysis formula of temperature vertical distribution was fitted in different months. Spectrum transmittance and average transmittance were simulated and calculated. The results show that height、zenith angle and distance have great influence on the transmittance of water vapor. The transmittance calculated by the method is accurate and has referent value in the project application.
【Fund】: 国家自然科学基金项目(No.61503394);; 安徽省自然科学基金项目(No.1408085QF131 No.15008085QF121);; 安徽高校自然科学研究重大项目(No.KJ2015ZD14);; 脉冲功率激光技术国家重点实验室主任基金项目(No.skl2013zr03)资助
【CateGory Index】: TN211
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