| 基于特征导向主成分分析遥感蚀变异常提取方法 |
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| 引用本文： | 谢明辉,张奇,陈圣波,李艳秋,查逢丽.基于特征导向主成分分析遥感蚀变异常提取方法[J].地球科学,2015,40(8):1381-1385. |
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| 作者姓名： | 谢明辉 张奇 陈圣波 李艳秋 查逢丽 |
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| 作者单位： | 1.吉林大学地球探测科学与技术学院, 吉林长春 130026 |
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| 基金项目： | 国家高技术研究发展计划(863计划)项目2012AA12A308国家高技术研究发展计划(863计划)项目2008AA121100深部探测关键仪器装备野外实验与示范项目201011083 SinoProbe09-06国家自然科学基金项目41402293 |
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| 摘 要： | 为利用多光谱遥感数据提取蚀变异常信息, 在分析蚀变矿物的先进星载热发射和反射辐射仪(advanced spaceborne thermal emission and reflection radiometer, ASTER)和影像短波近红外(visible and near IR-short wave-length IR, VNIR-SWIR)谱带的特征光谱曲线的基础上, 对传统的主成分分析法进行了改进, 利用特征导向主成分分析法对辽宁兴城地区进行矿物蚀变信息提取, 成功的对该地区内的褐铁矿(Fe3+)、绿泥石(Mg-OH基团矿物)和高岭石(Al-OH基团矿物)进行了蚀变异常信息提取.通过实践验证和研究区地质资料表明, 特征导向主成分分析法能够有效地提取蚀变信息并识别研究区内主要矿物, 可以为该区的成矿预测工作提供一定的依据.
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| 关 键 词： | 先进星载热发射和反射辐射仪 Crosta分析 蚀变异常 遥感 兴城地区 |
| 收稿时间： | 2015-03-20 |
Extraction of Alteration Anomaly Information by Feature-Based Principal Component Analysis from ASTER Data |
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| Abstract: | In order to extract the alteration anomaly information with multi-spectral remote sensing data, this paper improves the traditional principal component analysis is improved and the mineral alteration information of Xingcheng region of Liaoning using the method of the feature oriented principal component analysis is extracted, successfully for the alteration anomaly of the limonite (Fe3+), chlorite (Mg-OH group minerals) and kaolinite (Al-OH group minerals) based on the analysis of the characteristic curve of canopy spectral in VNIR-SWIR (visible and near IR-short wave-length IR) band of ASTER (advanced spaceborne thermal emission and reflection radiometer) data about alteration mineral.Field practice and geological data of research area indicate that the method above can effectively extract the alteration information and identify the mainly mineral of research area, which can provide a certain basis for the metallogenic prediction. |
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