一种检测煤田地表热异常的新方法A Novel Method for Extracting Coalfield Ground Surface Thermal Anomalies
庄伟,陈云浩,余晓敏,陈路遥
摘要(Abstract)：
煤田自燃导致严重资源浪费,同时又引起大气污染、地表坍塌等灾害,遥感已成为检测煤火的一种重要途径。研究时采用MNF变换、多阈值密度分割、差值法提取煤火高温火点与普通热异常信息,并结合GIS定量分析。研究发现差值法适合提取高温火点信息,MNF变换可以很好的去除太阳辐射对地面温度的影像,并且能够很好地提取普通热异常信息,多阈值密度分割可以确定较高的亮温区域,三种方法综合运用就可以较准确的圈定煤火热异常区域,从而有效的监测地下煤火情况。
关键词(KeyWords)： 遥感;热红外;MNF;变换;煤火信息
基金项目(Foundation): 国家自然科学基金项目(40671130)
作者(Author): 庄伟,陈云浩,余晓敏,陈路遥
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