ETM+和ASTER数据在遥感信息提取中的对比研究  

Comparison Between ETM+ and ASTER Data for Extraction of Alteration Information

作　　者：林腾[1] 高光明[1] 刘容秀[1] 肖娟[1] 

机构地区：[1]中南大学地学与环境工程学院,湖南长沙410083

出　　处：《遥感信息》2011年第1期65-69,共5页Remote Sensing Information

摘　　要：遥感蚀变信息提取是找矿的一个重要技术手段。本文选择位于秘鲁南部阿雷基帕(AREQUIPA)省境内的萨卡纳(CERCANA)和伊卡(ICA)省境内的Moarcona铁矿区作为本文的两个研究区,从分析地物光谱出发,利用ETM+和ASTER卫星影像数据,通过主成份分析法和比值分析法分别对两个研究区进行泥化蚀变信息提取和铁染蚀变信息提取,并对两者的提取结果进行对比分析。最后结果表明,相较于ETM+数据,ASTER数据在矿化蚀变信息的提取方面具有更大的优势。Remote sensing extraction of alteration information technology is an important means of prospecting.This article selected CERCANA located in AREQUIPA province of southern Peru and Moarcona ore zone located in ICA Province of southern Peru as two study areas of this paper.And starting from the spectrum analysis of surface features,using ETM ＋ and ASTER satellite image data to extract clay alteration information of CERCANA by principal component analysis method,and extract iron staining alteration information of Marcona by band ratio method,besides making comparative analysis of the results of the two extractions.The final results show that ASTER data in the alteration information extraction has a greater advantage compared with ETM ＋ data.

关 键 词：矿化蚀变 ETM+ ASTER 光谱特征 主成份分析 比值法 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]