| 脉冲性电磁法物探信号的频谱分析 |
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| 引用本文： | 曲亚军,王文清,沙成满.脉冲性电磁法物探信号的频谱分析[J].地质找矿论丛,2007,22(3):224-227. |
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| 作者姓名： | 曲亚军 王文清 沙成满 |
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| 作者单位： | 辽宁省地质矿产调查院,沈阳,110031;东北大学,资源与土木工程学院,沈阳,110004 |
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| 基金项目： | 中国地质调查局区域地质调查项目 |
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| 摘 要： | 电磁法物探的勘测信号,在不同频率段,存在不同的信号脉冲现象.通过小波时频分析功能,可以对脉冲现象进行分析.研究表明,脉冲现象严重影响基于傅立叶变换方法的解译效果,脉冲现象严重时,傅立叶方法已不适用.
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| 关 键 词： | 脉冲性 电磁法 频谱分析 |
| 文章编号： | 1001-1412（2007）03-0224-04 |
| 收稿时间： | 2005/12/12 0:00:00 |
| 修稿时间： | 2005-12-12 |
THE FREQUENCY SPECTRAL ANALYSIS OF ELECTROMAGNETIC SIGNAL ON GEOPHYSICAL PROSPECTING |
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| QU Ya-jun,WANG Wen-qing and SHA Cheng-man.THE FREQUENCY SPECTRAL ANALYSIS OF ELECTROMAGNETIC SIGNAL ON GEOPHYSICAL PROSPECTING[J].Contributions to Geology and Mineral Resources Research,2007,22(3):224-227. |
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| Authors: | QU Ya-jun WANG Wen-qing and SHA Cheng-man |
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| Institution: | Liaoning Institute of Geological and Mineral Survey, Shenyang 110032, China;Liaoning Institute of Geological and Mineral Survey, Shenyang 110032, China |
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| Abstract: | With respect to signals of geophysical exploration of electrical-magnetic method,there is different impulse phenomenon in different frequency.The time-frequency analysis function of wavelet can analyses impulse phenomenon.The research shows that the impulse phenomenon affects seriously the Fourier tranform-based interpretation.When serious impulse phenomenon exists in signals,The Fourier transform Method can't be used. |
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| Keywords: | impulse properties electrical-magnetic method frequency spectral analysis |
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