Based On Spectral Similar Scale Of Remote Sensing Mineralized Alteration Information Extraction Method Research

In recent years, social development is rapid, mineral resources demand is big, found more and deeper mineral resources is very necessary. The remote sensing technology in the geological prospecting work plays an very important role as the forerunner, with geological, geophysical and geochemical exploration technology, especially in western alpine region and mineral resources exploration is quick and effective exploration methods. Due to the mineralized alteration information in remote sensing image is a weak information, predecessors puts forward many methods summarize a wealth of experience, main can be divided into band ratio method, principal component analysis, but the use of these methods to achieve the effect often unsatisfactory. Keep looking for effective remote sensing altered information extraction new methods, improve the credibility of remote sensing prospecting, has very important practical significance.This paper first introduces remote sensing mineralized alteration information extraction, the research present situation and some traditional methods of extraction, and then discusses the theoretical basis and spectral similar measure to solve the key technical problems, case study of the periphery of JiaMa copper polymetallic ore, Tibet, this method in remote sensing mineralized alteration extracting information applications of the experiment, the main content summarized as follows:Summarizes the remote sensing image in ETM + typical altered minerals such as iron ions, the spectral characteristics of relevant, hydroxyl relevant CO₃^2- related with altered minerals, etc.;Will the spectral similar scale applied to the periphery of JiaMa copper polymetallic ore, Tibet, remote sensing mineralized alteration information extraction. Based on the results of the validation and extracted with traditional extraction method contrast, show that this method to reduce the influence of foreign phenomenon with spectrum, improve remote sensing altered information extraction accuracy.Spectrum similar scale method of remote information extraction, and combined with the existing related geological material, comprehensive analysis on the basis of the metallogenic elements JiaMa cu polymetallic deposits periphery delineating the six ore-hunting prospect areas, cloth, namely, the east village ore-hunting prospect areas, JiaMa mining area north ore-hunting prospect areas, DongBang da SuoBo hillock ore-hunting prospect areas, Allah ore-hunting prospect areas, check fruit prospecting cut vision zone and loose lu ore-hunting prospect areas. The Middle East, cloth village ore-hunting prospect areas and JiaMa mining area north vision zone can be used as JiaMa periphery prospecting exploration on mining area.The study of the periphery of JiaMa copper polymetallic ore, Tibet, for future exploration work provides important reference for mineral exploration, has certain directive function, promote the continuous research effective remote sensing altered information extraction new methods.