20 May 2016 High spectral resolution airborne short wave infrared hyperspectral imager
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Abstract
Short Wave InfraRed(SWIR) spectral imager is good at detecting difference between materials and penetrating fog and mist. High spectral resolution SWIR hyperspectral imager plays a key role in developing earth observing technology. Hyperspectral data cube can help band selections that is very important for multispectral imager design. Up to now, the spectral resolution of many SWIR hyperspectral imagers is about 10nm. A high sensitivity airborne SWIR hyperspectral imager with narrower spectral band will be presented. The system consists of TMA telescope, slit, spectrometer with planar blazed grating and high sensitivity MCT FPA. The spectral sampling interval is about 3nm. The IFOV is 0.5mrad. To eliminate the influence of the thermal background, a cold shield is designed in the dewar. The pixel number of spatial dimension is 640. Performance measurement in laboratory and image analysis for flight test will also be presented.
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Liqing Wei, Liqing Wei, Liyin Yuan, Liyin Yuan, Yueming Wang, Yueming Wang, Xiaoqiong Zhuang, Xiaoqiong Zhuang, } "High spectral resolution airborne short wave infrared hyperspectral imager", Proc. SPIE 9819, Infrared Technology and Applications XLII, 98190L (20 May 2016); doi: 10.1117/12.2223652; https://doi.org/10.1117/12.2223652
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