A REVIEW OF REMOTE SENSING ALTERATION INFORMATION EXTRACTION TECHNIQUES

The use of remote sensing data to extract mineral alteration information, which serves as important basis and means for geological prospecting, is a research focus in the field of remote sensing application. By studying the remote sensing data, mineral types and common methods involved in alteration information extraction in recent years, the paper makes a comparison analysis of the effects of different remote sensing methods to extract alteration information, and summarizes its development trends. The results show that the ground accuracy of alteration information is improving accordingly with the development of remote sensing data towards high spatial resolution. More and more minerals can be extracted due to the improvement of spectral resolution. The development of mathematical methods and artificial intelligence has improved the application space of alteration information extraction.