摘要
航空高光谱遥感通常工作高度在海拔4000m以下,对于高海拔地区则需要采用密封舱飞机作为平台,而密封舱飞机底部玻璃窗口会对航空成像光谱仪光谱辐射产生影响,如何确定并消除该影响则成为航空高光谱遥感能否应用于高海拔地区的关键。我们研究小组提出了一种利用密封舱光学玻璃进行实验室定标的方法来进行研究,这种方法可以确定光学玻璃对航空成像光谱仪光谱偏移和辐射强度的影响。研究表明,光学玻璃对光谱仪的光谱偏移影响较小,在1%以内;而对光谱仪的辐射强度影响较大,在10%至50%之间,尤其是对短波红外波段影响较大。通过实验我们可以生成新的光谱定标文件和辐射定标文件来消除该光学玻璃的影响,从而使机载高光谱遥感能应用于更广泛的地区。
Airborne hyperspectral remote sensing usually works below 4 000 maltitude,and pressurized aircraft should be used as a platform for high altitude areas,and the glass window at the bottom of the cabin will affect the spectral radiation of the airborne imaging spectrometer.How to determine and eliminate the effect is the key if the airborne hyperspectral remote sensing can be applied to the high altitude.Our research team has proposed a laboratory calibration method using the optical glass to determine the effect of optical glass on the spectral offset and radiation intensity of the aero imaging spectrometer.The study shows that the optical glass has less influence on spectral offset of the spectrometer,less than 1%,and it has great influence on the radiation intensity of the spectrometer,especially between 10%and 50%,especially for the short wave infrared band.Through these experiments,we can generate new spectral calibration files and radiometric calibration files to eliminate the effect of the optical glass,so that Airborne Hyperspectral remote sensing can be applied to a wider area.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2018年第S1期331-332,共2页
Spectroscopy and Spectral Analysis
关键词
航空高光谱遥感
光学玻璃
光谱定标
辐射定标
Airborne hyperspectral remote Sensing
Optical glass
Spectral calibration
Radiometric calibration
