| 光谱学与光谱分析 |
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| The Application of Spectral Geological Profile in the Alteration Mapping |
| LI Qing-ting, LIN Qi-zhong, ZHANG Bing, LU Lin-lin* |
| Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China |
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Abstract Geological section can help validating and understanding of the alteration information which is extracted from remote sensing images. In the paper, the concept of spectral geological profile was introduced based on the principle of geological section and the method of spectral information extraction. The spectral profile can realize the storage and vision of spectra along the geological profile, but the spectral geological spectral profile includes more information besides the information of spectral profile. The main object of spectral geological spectral profile is to obtain the distribution of alteration types and content of minerals along the profile which can be extracted from spectra measured by field spectrometer, especially for the spatial distribution and mode of alteration association. Technical method and work flow of alteration information extraction was studied for the spectral geological profile. The spectral geological profile was set up using the ground reflectance spectra and the alteration information was extracted from the remote sensing image with the help of typical spectra geological profile. At last the meaning and effect of the spectral geological profile was discussed.
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Received: 2011-12-28
Accepted: 2012-02-18
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Corresponding Authors:
LU Lin-lin
E-mail: lllu@ceode.ac.cn
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