庞西垌地区ETM^+数据蚀变信息提取

Extraction of ETM^+ data alteration information in Pangxidong area

以庞西垌地区为研究区,根据金属矿化蚀变岩的光谱特征,选取ETM+影像,采用主成分分析、波段比值、阈值分割等方法增强处理,提取矿化蚀变信息,结合研究区地质构造及成矿信息,圈定成矿远景区,为该区进一步找矿提供参考。

Pangxidong area was chosen as the study area, according to the spectral characteristics of the altered rocks, based on ETM ＋ remote sensing data, enhanced processing methods were used such as principal component analysis, band radio and density separation to extract alteration information. Geological data were integrated with the result of remote sensing image processing to delineate prospecting targets and provide reference for further exploration.