星载成像光谱仪杂散光检测技术

介绍了星载成像光谱仪杂散光检测技术在国内外的发展状况,阐述了成像光谱仪杂散光的定义、来源和危害,分析了杂散光检测的必要性。通过截止滤光片法、光谱法、谱杂散光系数法、级数透过率法、氧气吸收光谱及参数拟合法、卷积计算法和矩阵修正法等7种光谱仪器杂散光检测方法优缺点的对比,给出了星载成像光谱仪杂散光检测技术的具体要求和发展趋势,认为单一的检测技术很难满足工程研制的实际需要,针对各研制阶段的组合检测技术将是星载成像光谱仪杂光检测的发展方向。

Stray light measurement technologies for space-borne imaging spectrometer

The current international levels of stray light measurement technologies for a space-borne imaging spectrometer are introduced and the definition of stray light and it's source and harmfulness are discussed. The cut-off filter method, spectrum method, spectral stray light factor method, series transmission method, oxygen absorption spectra and parameter fit method, convolution method and correcting matrix method are described to compare their advantages and disadvantages in the stray light measurement, then the specific requirement of the stray light measurement of space-borne imaging spectrometer are given. Finally, the trends of development of stray light measurement for space-borne imaging spectrometers are summarized, which point out that the independent measuring method for stray light can not meet the needs of practical engineering and the compound measuring technologies will be a developing direction for stray light measurements of space-borne imaging spectrometers.