星载石英漫反射板双向反射分布函数实验测量研究

发布时间：2018-05-22 18:29

本文选题：石英漫反射板 + 双向反射分布函数　；参考：《光谱学与光谱分析》2016年05期

【摘要】：石英漫反射板用于星载大气痕量气体差分吸收光谱仪测量太阳参考谱的观测系统中,太阳光谱的测量精度将会直接影响痕量气体反演的精度,为保证载荷全视场太阳光谱的测量精度,石英漫反射板需具有良好的朗伯特性,在仪器观测视场内能够提供均匀的光源。为此,在实验室利用双向反射分布函数(BRDF)测量仪,选取F4(聚四氟乙烯)粉压制板作为标准板,采用相对测量法对研制的四种石英漫反射板样品进行了朗伯特性测量,得出了四种样品在波长180~880nm、观测角度-70°~+70°范围内的BRDF。通过对样品BRDF的分析,筛选出了两种工艺下的朗伯特性较好的石英漫反射板作为初选样品,并测量比较了石英漫反射板和F4标准板对太阳光的漫反射光谱,石英漫反射板对太阳光的反射特性较好,可以作为测量用漫反射板获取太阳参考谱。为进一步的紫外辐照、原子氧侵蚀等试验以及对比试验提供了数据支持。
[Abstract]:The quartz diffuse reflectance plate is used in the measurement system of the solar reference spectrum by the differential absorption spectrometer for trace gases in the spaceborne atmosphere. The accuracy of the solar spectrum measurement will directly affect the accuracy of trace gas inversion. In order to ensure the measurement accuracy of the solar spectrum in the full field of view, the quartz diffuse reflector should have good Lambert characteristics and provide a uniform light source in the field of view observed by the instrument. Therefore, in the laboratory, four kinds of quartz diffuse reflectance plate samples were measured by relative measurement method, using the two-way reflectance distribution function (BRDF) measuring instrument, selecting the F4 powder pressing board as the standard plate, and using the relative measurement method to measure the Lambert characteristics of the four kinds of quartz diffuse reflector. The BRDFs of four kinds of samples have been obtained in the wavelength of 180 ~ 880nm and the observation angle of -70 掳~ 70 掳. Based on the analysis of sample BRDF, the quartz diffuse reflectors with better Lambert characteristics were selected as primary samples, and the diffuse reflectance spectra of quartz diffuse reflectors and F4 standard plates to sunlight were measured and compared. The quartz diffuse reflector has better reflection characteristics of solar light and can be used to measure the solar reference spectrum by using the diffuse reflectance plate. It provides data support for further ultraviolet irradiation, atomic oxygen erosion test and contrast test.
【作者单位】：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】：国家自然科学基金项目(41275037) 安徽省杰出青年科学基金项目(1308085JGD03)资助
【分类号】：P182.3

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