红外望远镜站址大气传输和环境背景特性的测量分析研究
发布时间:2018-08-03 21:20
【摘要】:大口径的地基红外望远镜必须安装在具有良好大气条件的观测台站才能充分发挥其性能,天空背景辐射和大气传输特性是地基红外望远镜站址选择所需考虑的重要内容。采用消光-小角度散射法在西藏羊八井实测了太阳直接红外辐射和大气背景红外辐射,并根据备选站点的大气参数,采用CART软件计算了当地8~14μm波段整层垂直大气的光谱透过率、太阳直接光谱辐射和地面大气垂直向下的背景光谱辐射,以及相关量的波段积分值,这些结果有助于地基红外太阳望远镜的站址选择。
[Abstract]:Large aperture ground-based infrared telescopes must be installed in observation stations with good atmospheric conditions in order to give full play to their performance. The sky background radiation and atmospheric transmission characteristics are important considerations in the selection of the site of ground-based infrared telescopes. Solar direct infrared radiation and atmospheric background infrared radiation were measured in Yangbajing, Tibet, by means of extinction and small angle scattering method. The spectral transmittance of the whole vertical atmosphere of 814 渭 m was calculated by using CART software according to the atmospheric parameters of the selected stations. The direct solar spectral radiation and the vertical downward background spectral radiation of the surface atmosphere, as well as the band integral values of the correlation amount, are helpful to the site selection of the ground-based infrared solar telescope.
【作者单位】: 中国科学院安徽光学精密机械研究所中国科学院大气成分和光学重点实验室;中国科学院国家天文台中国科学院太阳活动重点实验室;中国科学技术大学环境科学与光电技术学院;
【基金】:空间目标测量重点实验室开放基金
【分类号】:P111
[Abstract]:Large aperture ground-based infrared telescopes must be installed in observation stations with good atmospheric conditions in order to give full play to their performance. The sky background radiation and atmospheric transmission characteristics are important considerations in the selection of the site of ground-based infrared telescopes. Solar direct infrared radiation and atmospheric background infrared radiation were measured in Yangbajing, Tibet, by means of extinction and small angle scattering method. The spectral transmittance of the whole vertical atmosphere of 814 渭 m was calculated by using CART software according to the atmospheric parameters of the selected stations. The direct solar spectral radiation and the vertical downward background spectral radiation of the surface atmosphere, as well as the band integral values of the correlation amount, are helpful to the site selection of the ground-based infrared solar telescope.
【作者单位】: 中国科学院安徽光学精密机械研究所中国科学院大气成分和光学重点实验室;中国科学院国家天文台中国科学院太阳活动重点实验室;中国科学技术大学环境科学与光电技术学院;
【基金】:空间目标测量重点实验室开放基金
【分类号】:P111
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