| 一维HHT变换在探地雷达数据处理中的应用 |
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| 引用本文： | 王超,沈斐敏.一维HHT变换在探地雷达数据处理中的应用[J].工程地质学报(英文版),2015,23(2):328-334. |
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| 作者姓名： | 王超 沈斐敏 |
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| 作者单位： | 1.福州大学土木工程学院 福州 350002; |
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| 基金项目： | 福建省交通厅科技项目(201338)资助． |
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| 摘 要： | 探地雷达(GPR)噪声信号通常具有非稳态、非线性特征,为去除这些噪声提高GPR图像解译的准确性,对利用HHT方法去噪进行了研究。首先阐述HHT的基本理论,然后通过对探地雷达数值模拟信号中噪声的去除验证基于HHT方法的可行性,最后将该方法用于探地雷达隧道地质超前预报的数据处理中。通过研究表明:该方法可以用于探地雷达信号的去噪,通过Hilbert变换得到三特征参数图像与EMD分解后合成图像进行对比验证,从而达到提高GPR信号解译精度的目的。
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| 关 键 词： | 希尔伯特-黄变换 探地雷达信号去噪 经验模态分解 希尔伯特变换 |
| 收稿时间： | 2014-10-15 |
APPLICATION OF ONE-DIMENSIONAL HHT TRANSFORM TO GPR DATA PROCESSING |
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| WANG Chao,SHEN Feimin.APPLICATION OF ONE-DIMENSIONAL HHT TRANSFORM TO GPR DATA PROCESSING[J].Journal of Engineering Geology,2015,23(2):328-334. |
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| Authors: | WANG Chao SHEN Feimin |
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| Institution: | 1.College of Civil Engineering, Fuzhou University, Fuzhou 350002;2.Fujian Chuanzheng Communications College, Fuzhou 350007 |
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| Abstract: | The noise signal of ground penetrating radar(GPR)usually has the unsteady and nonlinear characteristics. To remove these noises and improve the accuracy of GPR image interpretation, denoising with HHT method is studied. Firstly, the basic theory of the HHT is described. Then the feasibility of HHT method is verified with numerical simulation of GPR data denoising. Finally, the method is used in the tunnel geological advanced prediction of GPR data processing. The research shows that the method can be used in GPR signal denoising and that the precision of GPR signal interpretation can be improved by contrasting three characteristic parameters images obtained by Hilbert transform with EMD composite images. |
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| Keywords: | Hilbert-Huang transforms The GPR signal denoising Empirical mode decomposition Hilbert transform |
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