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CASI/SASI航空高光谱遥感矿物技术研究——以甘肃北山柳园地区为例

杨清华,  吴小娟,  肖政浩,  刘肖姬,  董沐鑫

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文章导航 > 地质力学学报  > 2015 >  21(2): 241-251
杨清华, 吴小娟, 肖政浩, 等, 2015. CASI/SASI航空高光谱遥感矿物技术研究——以甘肃北山柳园地区为例. 地质力学学报, 21 (2): 241-251.
引用本文: 杨清华, 吴小娟, 肖政浩, 等, 2015. CASI/SASI航空高光谱遥感矿物技术研究——以甘肃北山柳园地区为例. 地质力学学报, 21 (2): 241-251.
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YANG Qing-hua, WU Xiao-juan, XIAO Zheng-hao, et al., 2015. TECHNOLOGY RESEARCH ON MINERAL EXTRACTION BY USING CASI/SASI AIRBORNE HYPERSPECTRAL DATA. Journal of Geomechanics, 21 (2): 241-251.
Citation: YANG Qing-hua, WU Xiao-juan, XIAO Zheng-hao, et al., 2015. TECHNOLOGY RESEARCH ON MINERAL EXTRACTION BY USING CASI/SASI AIRBORNE HYPERSPECTRAL DATA. Journal of Geomechanics, 21 (2): 241-251.
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CASI/SASI航空高光谱遥感矿物技术研究——以甘肃北山柳园地区为例

  • 1.

    中国国土资源航空物探遥感中心, 北京 100083

  • 2.

    武汉大学遥感学院, 武汉 430027

  • 3.

    中国地质大学地球科学与资源学院, 北京 100083

基金项目: 

中国地质调查局地质调查项目"地质勘查遥感系统集成与综合应用示范" 1212011120226

详细信息
    作者简介:

    杨清华(1964-), 男, 教授级高工, 主要从事微波遥感技术方法与应用、土地动态监测方法与应用、遥感地质找矿和地质灾害等领域研究及管理工作。E-mail:466064295@qq.com

    通讯作者:

    吴小娟(1986-), 女, 博士研究生, 主要研究方向为遥感数据应用。E-mail:wuxiaojane@163.com

  • 中图分类号: P627

TECHNOLOGY RESEARCH ON MINERAL EXTRACTION BY USING CASI/SASI AIRBORNE HYPERSPECTRAL DATA

  • 1.

    China Aero Geophysical Survey & Remote Sensing Center for Land and Resources, Beijing 100083, China

  • 2.

    School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430027, China

  • 3.

    School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China

    摘要
  • 摘要: 能源勘查、岩石矿物识别、矿物丰度制图以及成矿远景区圈定是高光谱技术发展和应用的主要方向。CASI/SASI航空高光谱数据可以在同一平台下同时获取覆盖可见光-近红外-短波红外光谱段的光谱信息, 且光谱分辨率和空间分辨率远远优于多光谱及星载高光谱数据, 所以在矿物蚀变信息提取中具有广泛的应用前景。以柳园研究区为研究对象, 对CASI/SASI航空高光谱遥感矿物过程中的关键技术进行了实验研究, 确定出航空高光谱矿物蚀变信息提取流程, 并对研究区蚀变矿物进行识别、填图。通过与研究区地质资料和前人实地勘探资料对比得出, 研究区CASI/SASI航空高光谱遥感蚀变异常结果与现实状况相当吻合。

     

    Abstract: Energy exploration, rock identification, minerals mapping, and metallogenic delineation are the main directions of hyperspectral technology. The spectral information of visible, near-infrared and short-wave infrared can be obtained under the same platform in CASI/SASI airborne hyperspectral data which has higher spectral resolution and spatial resolution than multi-spectral data and spaceborne hyperspectral data and gains broader use in extraction of mineral alteration information. The paper studies the key technologies of mineral extraction and develops the flow of mineral mapping with CASI/SASI airborne hyperspectral data by extracting mineral alteration information such as chlorite, muscovite, montmorillonite, and illite in Liuyuan, Gansu. By comparing geological data and previous exploration data, the extraction results of mineral alteration information are anastomosed to the facts.

     

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  • 图  1  北山柳园地区构造地质简图

    Figure  1.  The tectonic and geological sketch map of Liuyuan area

    下载: 全尺寸图片 幻灯片

    图  2  柳园研究区CASI/SASI影像图及区内蚀变矿物局部图

    Figure  2.  CASI/SASI data and partial alteration minerals in Liuyuan area

    下载: 全尺寸图片 幻灯片

    图  3  CASI/SASI航空成像光谱数据处理流程

    Figure  3.  CASI/SASI data processing diagram

    下载: 全尺寸图片 幻灯片

    图  4  大气校正前后波谱曲线对比

    Figure  4.  Comparison of spectral curve between before and after atmospheric correction

    下载: 全尺寸图片 幻灯片

    图  5  N维可视化端元提取

    Figure  5.  End-members extraction by using N-dimensional visualization

    下载: 全尺寸图片 幻灯片

    图  6  各蚀变矿物信息提取局部图

    Figure  6.  Partial results of alteration minerals extraction

    下载: 全尺寸图片 幻灯片

    图  7  柳园地区矿物蚀变信息总图

    Figure  7.  Results of alteration minerals extraction in Liuyuan area

    下载: 全尺寸图片 幻灯片

    表  1  CASI/SASI的主要技术指标

    Table  1.   Main specifications of CASI/SASI

    数据类型光谱范围/nm每行像元数连续光谱通道数光变带宽/nm帧频(全波段)总视场角/(°)瞬时视场角/(°)信噪比(峰值)量化水平/位绝对辐射精度/%
    CASI-1500380~105014702882.314400.028>110014±(5~10)
    SASI-600950~245064010015.0100400.070>110014±(5~10)
    下载: 导出CSV
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  • 收稿日期:  2014-12-10
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