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定源瞬变电磁数据的时频转换反演技术研究

Mining Safety & Environmental Protection(2021)

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Abstract
目前定源回线瞬变电磁数据处理主要还是通过一维反演进行视电阻率计算.为了实现时域瞬变电磁数据快速三维正反演,提高反演精度,基于时频转换理论,采用正则化技术、有限差分法和NLCG反演算法,研究了理想模型及实测数据频域的三维正反演.解决了时频转换过程中矩阵奇异性求解的问题,成功实现了瞬变电磁响应时域向频域的转换和瞬变电磁响应频域的三维正反演.
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