Mineral Information Extraction Of Hyperspectral Remote Sensing Of Zhongdian Regional In Yunnan

Imaging spectroscopy has become the main direction of remote sensing for its high resolution and continuous band continuity.After more than 20 years of development,has been widely used in the field of geology and mineral resources survey,especially in the area of mineral identification and mapping.Mineral identification technology has become the key technology.The paper taking the za arc ore concentration areaof zhongdian regional in Yunnan(shangri-la)as the research area,carried out the basic research of wild mineral spectrum measurement,analysis and spectral characteristic changes with the aid of the SVC HR 1024 I feature spectrum instrument and established the mineral spectrum library and suitable minerals information extraction method for the spectrum recognition of high vegetation area.Accordingly,the paper implemented mineral mapping experiment with the use of Hyperion remote sensing image data on the emphasis areas of study areaand achieved good results.This article focuses on the following aspects:Firstly,the study found that the main minerals were iron oxide and clay minerals according to analyzing the formation mechanism of mineral wave spectra in the study area.Based on the field survey and the analysis of the mineral spectrum,summarized the stability of the characteristics of the mineral spectrum in the region and laid down the theoretical basis for the subsequent mineral mapping.Secondly,the study carried out the mineral recognition experiment based on Hyperion remote sensing data in the research area.The MTMF method was used in the experiment to reduce the influence of vegetation in the region and improved somewhat compared with the spectral Angle mappingand obtained good result.Thirdly,It is concluded that the spatial coincidence rate of chlorite in the silicified silicified zone,the kaolinite zone and the sericite zone is the highest in the mineral information and the algae zone of the Pulang mining area.The coincidence rate of the petrocatite belt is 37.24% and 52.65%,respectively.The results show that in the granite diorite porphyry,quartz diorite porphyry and quartz monzonite porphyry,The anastomosis rate of stone was 33.51% and 60.86%,respectively,in the quartz diorite porphyrite.The share of chlorite in the superposition of the alteration zone and the rock mass is the largest share,which is associated with the mineral composition contained in the rock mass.