Tiangong-1 hyperspectral imager is currently the highest spatial resolution and spectra composite indicator spatial spectral imager of China. To extract alteration information from Tiangong-1 hyperspectral data

an alteration information extraction method based on band correlation detection is proposed. This method was based on band correlation detection to select anomaly bands and then conducted alteration information extraction with the advantages of anomaly detection

endmember extraction

spectral matching and other methods. This new method successfully extracted the Al-OH mineral alteration anomaly information and four alteration minerals information of Tiangong-1 hyperspectral data. Findings of this research prove that the proposed method can effectively detect and extract alteration information of Tiangong-1 hyperspectral data and put forward its potential applications for geological mineral resources survey.