星载大气痕量气体差分吸收光谱仪(星载仪器)搭载于太阳同步轨道卫星上,应用于定量监测全球空气质量变化 以及污染气体的分布输运过程。星上定标是成像光谱仪获取数据定量化应用的基础,星载仪器采用太阳 光定标方式和标准灯定标方式进行在轨定标。需对星上定标方式采用的定标机构进行分析和合理的设计,以保 证星载仪器在轨定标的可靠性和精度。

Space-borne differential optical absorption spectrometer is mounted on the Sun-synchronous orbit satellite, which quantitatively monitors the global air quality changes and the transmission of pollutant gases distribution. The onboard calibration is the basis to obtain accurate quantified imaging data, and the space-borne instrument adopts sunlight calibration mode and standard lamp calibration mode. In order to ensure the reliability and accuracy of onboard calibration, analysis and rational design of the calibration mechanism are needed.