摘要
用于大气临边探测的高光谱成像仪是一种探测大气痕量气体的新型空间光学遥感仪器。分析了利用高光谱成像仪进行大气临边探测的原理,设计并研制了一台紫外/可见高光谱成像仪原理样机,该样机光学系统由前置望远系统和改进的Czerny-Turner光谱成像系统组成,工作谱段为280～390 nm和560～780 nm,通过转轮切换紫外、可见滤光片分别探测这2个波段。高光谱成像仪原理样机质量为15 kg,体积500 mm×350 mm×200 mm。对该样机的性能进行了检测并测量了低压汞灯的光谱。性能检测结果表明,空间分辨力为0.44 mrad,光谱分辨力为1.3 nm,均满足设计指标要求。该样机结构紧凑、质量小,在空间大气痕量气体探测领域有广泛的应用前景。
Hyperspectral imager for atmospherical limb sounding is an important new spaceborne optical remote sensing instrument for detecting trace components.The principle of atmospheric limb sounding with hyperspectral imager is analyzed.A prototype of UV/visible hyperspectral imager was designed and developed.The optical system of the prototype is composed of a fore telescope optical system and a modified Czerny-Turner spectral imaging system.The working spectral range of the hyperspectral imager is 280～390 nm and 560～780 nm.Through switching the UV/visible filters,the designed hyperspectral imager can detect the images in 280～390 nm and 560～780 nm,respectively.The total mass of the prototype is about 10 kg,and the dimension is 500 mm×250 mm×200 mm.The performances of the prototype were tested and the spectrum of a low-pressure mercury lamp was measured.The test result demonstrates that the spatial resolution of the prototype is 0.44 mrad,and the spectral resolution is 1.3 nm.Both spatial and spectral resolutions meet the design requirements.The prototype features compact structure and light mass,and has extensive application prospect in the field of atmospheric trace gas detection.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2012年第5期1167-1173,共7页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(41105014)资助项目
