Fig. 1. The process of thermal infrared radiation transmission in mineral imaging in the laboratory

Fig. 2. The data processing flow of mineral emissivity inversion in the laboratory

Fig. 3. Comparison of focal plane images of ATHIS before and ofter abnormal pixel restoration

Fig. 4. Comparison of focal plane images of ATHIS before and ofter radiation calibration

Fig. 5. The process of thermal infrared radiation transmission of gas imaging in laboratory

Fig. 6. The data processing flow of gas comcentration inversion in the laboratory

Fig. 7. Photo showing mineral emissivity measurement in the laboratory

Fig. 8. Spectrum of mineral emissivity measured in the laboratory

Fig. 9. Inversed spectrum of quarz emissivity from ATHIS measurements compared with spectral library

Fig. 10. Comparison of spectral consistency of quarz emissivity retrieved from different spatial dimensions of ATHIS

Fig. 11. Photo showing gas absorption spectrum measurement in the laboratory

Fig. 12. Comparison between measured transmission rate of ammonia and NIST spectral library

Fig. 13. Comparison between measured optical thickness of ammonia and NIST spectral library

Fig. 14. Histogram of ammonia concentration estimated in different bands