ANALYSIS AND EXTRACTION OF EMISSIVITY INF ORMATION FROM AN AIRBORNE THERMAL INFRARED MULTISPECTRAL SCANNER (ATIMS) DATA

The ratio-weighted method for extracting emissivity information was de scribed, The study shows that the limestone spectra in the study area are dominated by CO3 bending vibration reststrahlen band near 11.3 mu m (in CH6), the spectrum oi quartz sandstone has low emissivity at 8.6 similar to 9.0 mu m (CH2) and 9.8 similar to 10.6 mu m (CH5), while t he greywacke has low relative emissivity at 9.8 similar to 10.6 mu m ( CH5) and 10.6 similar to 11.4 mu m (CH6) due to the silicate mineral a nd some content of carbonate mineral. The results indicate that the ra tio-weighted method can be used for extracting emissivity information of ground objects from the airborne TIMS data.