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本文利用航空高光谱CASI数据和岩石的光谱特征,提出一种快速提取富含Fe2+岩石信息的算法,并由此获取辉绿岩脉信息。经过实地验证,数据处理结果的精度较高,处理结果中辉绿岩脉规模及其走向等特征清晰。将提取的结果与铀矿异常信息对比分析,发现富含Fe2+的辉绿岩脉与铀异常具有很强的相关性。通过利用这种方法,在研究区南部又新发现了两条辉绿岩脉构造。
In this paper, we use the hyperspectral CASI data and the spectral characteristics of rock to propose an algorithm for rapidly extracting Fe2 + -rich rock information and obtain the information of diabase dikes. After field verification, the accuracy of the data processing results is high, and the characteristics of diabase dikes and their trends in the treatment results are clear. Comparing the extracted results with the uranium ore anomalies, it is found that the diabase dikes rich in Fe2 + have a strong correlation with uranium anomalies. By using this method, two diabase dikes have been newly discovered in the southern part of the study area.