论文部分内容阅读
星载太阳紫外光谱监视器是一种小型化、高精度紫外-真空紫外光谱辐射计,它有两种工作模式,即探测太阳紫外光谱辐照度的太阳模式和探测大气的太阳后向散射紫外光谱辐亮度的大气模式。对应这两种工作模式分别建立了紫外-真空紫外光谱辐照度和紫外光谱辐亮度定标装置。光谱辐照度标准灯直接辐照仪器的漫反射板进行仪器的光谱辐照度响应度定标,光谱辐照度标准灯辐照标准漫反射板形成朗伯面光源进行仪器的光谱辐亮度响应度定标。误差分析表明:160~250 nm光谱辐照度绝对定标误差为6.5%,250~400 nm为4.3%;250~400 nm光谱辐亮度绝对定标误差为5.9%。星载太阳紫外光谱监视器获得的地外太阳紫外光谱辐照度与大气的太阳后向散射光谱辐亮度数据,同国际上的观测结果相比一致性达±10%。
The onboard solar UV monitor is a miniaturized, high-precision UV-VUV spectrometer that has two modes of operation: a solar mode to detect the irradiance of the sun’s UV spectrum and a solar backscatter to detect the atmosphere’s ultraviolet Spectral radiance of atmospheric mode. Corresponding to these two working modes, UV-VUV spectral radiance and UV spectral radiometric calibration devices were established respectively. Spectral irradiance standard lamp Directly irradiating instrument diffuse reflectance instrument Spectral irradiance response scale calibration, spectral irradiance Standard lamp irradiation Standard diffuse reflectance plate to form Lambertian light source Spectral radiance response of the instrument Degree calibration. Error analysis shows that the absolute calibration error of spectral irradiance at 160 ~ 250 nm is 6.5% and that at 250 ~ 400 nm is 4.3%. The absolute calibration error of spectral radiance at 250 ~ 400 nm is 5.9%. The extraterrestrial solar UV irradiance and the atmospheric solar backscatter spectral radiance data acquired by the spaceborne solar UV monitor are consistent with the international observations by ± 10%.