Spectral measurement of minerals and gases based on airborne thermal-infrared hyperspectral imaging system

Abstract

In this paper,we introduced the unique advantages of the thermal infrared hyperspectral imaging in many ap‐ plications,and then discuss the design to optimize sensitivity of the airborne thermal-infrared hyperspectral imaging sys‐ tem(ATHIS). Additionally,we establish emission spectrum of laboratory minerals and build the radiation model to measure the absorption spectrum of gas,with which the procession of separation of spectrum and temperature is ana‐ lyzed. Finally,ATHIS is used to carry out laboratory measurements of mineral emission spectrum and gas infrared ab‐ sorption spectrum. The results show that the data method we proposed for ATHIS can accurately invert mineral emissivi‐ ty spectrum and gas absorption spectrum. In the future,ATHIS will be used to carry out multi-platform remote sensing application experiments,which will lay the foundation for future development of space-borne thermal infrared hyper‐ spectral camera and data processing methods.