| 谱分析方法正演位场的若干问题 |
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| 引用本文： | 吴宣志,薛光琦.谱分析方法正演位场的若干问题[J].物探与化探,1987,11(4):298-306. |
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| 作者姓名： | 吴宣志 薛光琦 |
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| 作者单位： | 地质科学院矿床所
(吴宣志)，地质科学院矿床所(薛光琦) |
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| 摘 要： | 谱分析方法正演重磁场时,谱的离散化和截断产生异常的褶迭和皱波效应给计算结果带来了误差.本文提出消除办法,即先对谱进行褶迭和褶积,再作富里叶变换,得到的空间域异常就不再产生褶迭和皱波效应了.本文还对谱的解析式中某些奇异点的处理提出解决措施.
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SOME ASPECTS ON CALCULATION OP POTENTIAL FIELDS USING FOURIER TRANSFORMATION |
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| Institution: | Institute of Mineral Deposits, Chinese Academy of Geological Sciences |
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| Abstract: | Some errors of gravity and magnetic anomalies calculated in terms of Fou-rier transformation are caused by discretizating and truncating of their spectra.The authors have evaluated the folding and wrinkle of the calculated anoma-lies and sugest that a convolution and folding be needed before anti-Fouriertransformation to get rid of such errors. The paper also deals with the singula-rity problem of the spectrum function. |
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