• Spectroscopy and Spectral Analysis
  • Vol. 36, Issue 12, 3996 (2016)
ZHANG Xia1, WU Xing1、2, YANG Hang1, CHEN Sheng-bo3, and LIN Hong-lei1、2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: 10.3964/j.issn.1000-0593(2016)12-3996-05 Cite this Article
    ZHANG Xia, WU Xing, YANG Hang, CHEN Sheng-bo, LIN Hong-lei. Study on Recognition Model of Phyllosilicate of Martian Surface[J]. Spectroscopy and Spectral Analysis, 2016, 36(12): 3996 Copy Citation Text show less

    Abstract

    Phyllosilicate belongs to hydrated silica, which is a principal form of hydrous minerals on the martian surface. It’s also an indicator in comparing different sediments and degree of aqueous alteration. Therefore, it’s essential to establish its recognition model for studying the geologic evolution of the Mars. Short-wave infrared (SWIR) spectral bands and thermal infrared (TIR) spectral bands have distinct spectral response to the mineral groups and ions, so they have distinctive advantages in detecting minerals. However the method of combining SWIR and TIR to recognize phyllosilicate is rarely studied. Based on the USGS spectral library, facing Compact Reconnaissance Imaging Spectrometer for Mars(CRISM) and Thermal Emission Imaging System(THEMIS),we conducted the research on the mechanism of the spectral response of phyllosilicate, and established the SWIR and TIR identification model respectively, then combined the SWIR and TIR spectral features to build the combined recognition model of phyllosilicate with Fisher discriminant analysis. The results of cross validation show that the identification accuracy of combined model is the highest, which can correctly classify 90.6% of the mineral samples and improve the identification precision of phyllosilicate effectively.
    ZHANG Xia, WU Xing, YANG Hang, CHEN Sheng-bo, LIN Hong-lei. Study on Recognition Model of Phyllosilicate of Martian Surface[J]. Spectroscopy and Spectral Analysis, 2016, 36(12): 3996
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