光学精密工程2017，Vol.25Issue(8)：2064-2075,12.DOI:10.3788/OPE.20172508.2064
碳卫星高光谱CO2探测仪发射前光谱定标
Preflight spectral calibration of hyperspectral carbon dioxide spectrometer of TanSat
摘要
Abstract
In order to realize spectral calibration for TanSat''s hyperspectral Carbon Dioxide Spectrometer (CDS), a calibration system was established and relevant methodology such as design of the system, data acquisition and algorithms of data processing and etc was investigated.Based on the sounding principle, CDS''s spectral requirements were presented.Design of calibration system and the adopted equipments was described.Then after the scheme of Orbiting Carbon Observatory''s spectral calibration was compared, the modified methods such as automatic data acquisition, rotatable integrating sphere, power and dark calibration was analyzed.Finally, the methods of data processing were described as well.Experimental results indicate that the ILS concentration radios of CDS are more than 0.80, 0.81, 0.78 respectively and the intervals of FWHM are 0.039 2-0.042 4 nm, 0.123-0.128 nm, 0.157-0.168 nm respectively.The intervals of spectral sampling are 2.12-2.95, 1.97-2.27, 1.92-2.26 respectively.The comparison of on-orbit solar spectra indicate that the difference of central wavelength are less than 0.001 3, 0.058, 0.065 nm respectively.It can satisfy the system requirements of CDS.关键词
光学遥感/碳卫星/二氧化碳探测仪/光谱定标/线形函数Key words
remote sensing/TanSat/carbon dioxide spectrometer/spectral calibration/instrument line shape(ILS)分类
信息技术与安全科学引用本文复制引用
蔺超,李诚良,王龙,毕研盟,郑玉权..碳卫星高光谱CO2探测仪发射前光谱定标[J].光学精密工程,2017,25(8):2064-2075,12.基金项目
国家863高技术发展计划资助项目(No.2011AA12A102) （No.2011AA12A102）
