Alteration Mineral Mapping Method Based on Statistical Analysis of Field Measured Spectra
CHEN Yu1, 2, LIN Qi-zhong1, WEI Yong-ming3, WANG Meng-fei3, LI Hui1, 2
1. Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100086, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China 3. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China
Abstract：The present paper presents a new alteration mineral mapping method based on statistical analysis of field measured spectra. First of all, this method processes a cluster of measurement data of spectra of field samples, in order to distinguish different sample area from the overall types. Second, the results of the clustering of different mineral alterations established their respective discriminant functions. Thus, mapping major alteration type accords with the clustered reference spectra by given remote sensing images. Finally mapping further alteration types was based on the discriminant function of second step, which leads to final alteration map. This method takes full account of the different combination of alteration types, as well as the regional differences of alterations, and the establishment of the discriminant function for alteration minerals is more scientific. Moreover, the authors accessed the reliability of mapping to a certain extent. The method was applied to a study area of Baogutu in Xinjiang Province, which represents a good result.
陈 玉1, 2，蔺启忠1，魏永明3，王梦飞3，李 慧1, 2. 基于野外实测光谱统计分析的蚀变矿物填图[J]. 光谱学与光谱分析, 2010, 30(11): 3036-3040.
CHEN Yu1, 2, LIN Qi-zhong1, WEI Yong-ming3, WANG Meng-fei3, LI Hui1, 2. Alteration Mineral Mapping Method Based on Statistical Analysis of Field Measured Spectra. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(11): 3036-3040.
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