基于主动差分吸收光谱系统获取大气颗粒物光学特性研究
[Abstract]:Based on the active differential absorption spectroscopy remote sensing technology, a new spectral method for obtaining aerosol particles near the ground is carried out under the condition of clean atmospheric environment and reference optical path design technology. Aiming at the inherent wide band characteristics of the active differential absorption spectrum system with broadband xenon arc lamp as the light source, the optical thickness model of the analytical particles is established, and the optical properties of the atmospheric particles are obtained. Finally, the optical thickness of aerosol particles during the measurement period is obtained by external field experiment, and then the Angstrom wavelength index and turbidity coefficient, as well as atmospheric visibility data are obtained by logarithmic linear regression. The active differential absorption spectroscopy system measures the total absorption characteristics of the atmosphere in the optical path range to obtain the average level of particles in the monitoring area, which is more representative and valuable for further application.
【作者单位】: 淮北师范大学物理与电子信息学院;中国科学院安徽光学精密机械研究所环境光学与技术重点实验室;
【基金】:国家自然科学基金(Nos.41475017,41275027)资助~~
【分类号】:X513
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