| ETM+(TM)蚀变遥感异常提取方法研究与应用——方法选择和技术流程 |
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| 引用本文： | 张玉君,曾朝铭,陈薇. ETM+(TM)蚀变遥感异常提取方法研究与应用——方法选择和技术流程[J]. 国土资源遥感, 2003, 14(2): 44-49 |
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| 作者姓名： | 张玉君 曾朝铭 陈薇 |
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| 作者单位： | 张玉君（中国国土资源航空物探遥感中心,北京,100083）;曾朝铭（中国国土资源航空物探遥感中心,北京,100083）;陈薇（中国国土资源航空物探遥感中心,北京,100083） |
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| 基金项目： | 中国地质调查局"西部主要成矿带遥感找矿异常提取及应用研究"项目(200215000008)资助. |
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| 摘 要： | 从原理、模型试验及实际数据处理等方面分析对比了比值法、光谱角法及主分量分析法的优劣;选择了以主分量分析为主、光谱角法为辅进行蚀变遥感异常的提取;引用了误差理论某些基本概念,以标准离差σ作为遥感异常切割的尺度;建立了"去干扰异常主分量门限化技术流程"。以西藏驱龙—甲马蚀变遥感异常群为例,展示了此技术的效果,并与高光谱研究结果进行了比较。
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| 关 键 词： | 主分量分析 光谱角法 比值法 异常切割量化尺度 门限化 |
| 文章编号： | 1001-070X(2003)02-0044-06 |
| 收稿时间： | 2002-04-28 |
| 修稿时间： | 2002-04-28 |
THE METHODS FOR EXTRACTION OF ALTERATION ANOMALIES FROM THE ETM+(TM) DATA AND THEIR APPLICATION; METHOD SELECTION AND TECHNOLOGICAL FLOW CHART |
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| Affiliation: | China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China |
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| Abstract: | This is the second paper among the serial articles on the new parameter for the prediction of the mineral resources; alteration RSanomalies. The RM (Ratio Method),SAM (Spectral Angle Mapper)and PCA (Principle Component Analysis) were compared with each other by the analysis of their principles and by the model test. PCAwas selected as the main method and SAMas the supplementary one. The essential concepts of the error theory were quoted. The standard deviation σ was used as the measure for anomaly slicing. The flow chart "De-interfered Anomalous Principal Component Thresholding Technique" was given. Apractical application example for Qulong-Jiama anomaly group in Tibet was given in comparison with the hyperspectral results. |
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| Keywords: | PCA SAM RM Quantitative measure of anomaly slicing Thresolding |
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