基于改进匹配追踪算法的化爆地震波信号时频特征提取

钟明寿; 周辉; 刘影; 龙源; 郭涛

doi:10.11883/1001-1455(2017)06-0931-08

基于改进匹配追踪算法的化爆地震波信号时频特征提取

doi: 10.11883/1001-1455(2017)06-0931-08

解放军理工大学野战工程学院，江苏南京 210007

基金项目:

国家自然科学基金项目 51304218

国家自然科学基金项目 51508569

江苏省自然科学基金面上项目 BK20151449

详细信息

作者简介:
钟明寿(1983—)，男，博士, 讲师; 通信作者：周辉, 495994500@qq.com

中图分类号: O389
计量
- 文章访问数: 4370
- HTML全文浏览量: 1281
- PDF下载量: 306
- 被引次数: 0
出版历程
- 收稿日期: 2016-04-15
- 修回日期: 2016-07-27
- 刊出日期: 2017-11-25

Time-frequency analysis of explosion seismic signal based on improved matching pursuit

College of Field Engineering, PLA University of Science & Technology, Nanjing 210007, Jiangsu, China

摘要

摘要: 通过化爆地震波信号的时频分析可以获取丰富的地下岩层信息，为进一步的化爆地震波特性研究提供支撑。本文中利用爆炸地震波信号的非平稳随机特性，提出一种改进的匹配追踪算法(matching pursuits)，该方法能更有效地获取化爆地震波信号的时频信息。该算法首先对地震波信号进行Hibert变换，将其转换成复数信号，获得爆炸地震波信号瞬时频率相位参数，再进行子波分解，从而显著提高了匹配追踪算法的运算速率；用分解后的信号计算其魏格纳威利分布(Wigner Ville distribution)，有效地消除了交叉干扰项的影响。将该方法用于实测地震波信号的时频分析，获得了分辨率较高的时频分布图，且运算速率大大提高。
- 爆炸地震波 /
- 匹配追踪 /
- 复数信号 /
- 时频分析
Abstract: Abundant underground rock information can be obtained through the analysis of time-frequency of explosive seismic wave signals, which lays a foundation for further research on characteristics of explosive seismic waves. In this study, based on the non-stationary random nature of the explosive seismic signals, we presented an improved matching pursuits (MP) algorithm to extract the time-frequency information of explosive seismic signals, namely using the Hilbert transformation to convert the signal into a plural signal to acquire the instantaneous frequency and phase parameter of the signal and then decomposing the signal to a series of wavelets. Thus the operation rate was significantly improved and the Wigner Ville distributions (WVD) and its time frequency were calculated with the influence of the cross interference term effectively eliminated. This method has been used to take a time-frequency analysis of an actual explosive seismic wave signal and has acquired a time-frequency distribution with a high resolution and operation rate.
- explosive seismic wave /
- matching pursuits /
- plural signal /
- time-frequency analysis

HTML全文

图 1 给定函数波形图

Figure 1. Waveforms of the given function

下载: 全尺寸图片幻灯片

图 2 两种方法差值比较图

Figure 2. Residuals comparison chart of two different methods

下载: 全尺寸图片幻灯片

图 3 调制信号时程曲线

Figure 3. Time travel curve of modulating signal

下载: 全尺寸图片幻灯片

图 4 调制信号时频图

Figure 4. Time-frequency of modulating signal

下载: 全尺寸图片幻灯片

图 5 合成信号图

Figure 5. Synthesized signal

下载: 全尺寸图片幻灯片

图 6 合成信号时频分布

Figure 6. Time-frequency of synthesized signal

下载: 全尺寸图片幻灯片

图 7 带Gabor原子的合成信号时频分布图

Figure 7. Time-frequency of synthesized signal with Gabor atoms

下载: 全尺寸图片幻灯片

图 8 地震波现场监测

Figure 8. Experimental field of seismic wave

下载: 全尺寸图片幻灯片

图 9 地震勘探实测信号

Figure 9. Actual seismic signal

下载: 全尺寸图片幻灯片

图 10 匹配追踪分解效果图

Figure 10. Decomposition results of matching pursuits

下载: 全尺寸图片幻灯片

图 11 爆炸地震波信号时频分布

Figure 11. Time-frequency distribution of seismic signals

下载: 全尺寸图片幻灯片

图 12 各起爆点化爆地震波WVD时频分布

Figure 12. Wigner-Ville distribution of seismic wave with different initiation point

下载: 全尺寸图片幻灯片

参考文献(11)

[1]	钟明寿, 龙源, 谢全民, 等.装药不耦合系数对碳酸盐岩爆炸地震波能量的影响[J].爆炸与冲击, 2011, 31(6):612-618. http://d.old.wanfangdata.com.cn/Periodical/bzycj201106009 Zhong Mingshou, Long Yuan, Xie Quanmin, et al.Effects of non-coupling charge coefficients on explosion seismic wave energy in carbonate rocks[J].Explosion and Shocks Waves, 2011, 31(6):612-618. http://d.old.wanfangdata.com.cn/Periodical/bzycj201106009
[2]	钟明寿, 龙源, 李兴华, 等.基于炮孔不同耦合介质的孔壁爆炸载荷及比能时间函数分析[J].振动与冲击, 2011, 30(7):116-119. doi: 10.3969/j.issn.1000-3835.2011.07.022 Zhong Mingshou, Long Yuan, Li Xinghua, et al.Time function for borehole explosive loading and specific energy based on different coupling mediums[J].Journal of Vibration and Shock, 2011, 30(7):116-119. doi: 10.3969/j.issn.1000-3835.2011.07.022
[3]	钟明寿, 龙源, 李兴华, 等.碳酸盐岩中炮孔不耦合系数对地震激发效果影响的分析[J].石油地球物理勘探, 2011, 46(2):165-169. http://d.old.wanfangdata.com.cn/Periodical/sydqwlkt201102001 Zhong Mingshou, Long Yuan, Li Xinghua, et al.Influence of borehole non-coupling coefficients on detonation effectiveness of seismic source in carbonate rock[J].Oil Geophysical Prospecting, 2011, 46(2):165-169. http://d.old.wanfangdata.com.cn/Periodical/sydqwlkt201102001
[4]	Mallat S, Zhang Z.Matching pursuit with time-frequency dictionaries[J].IEEE Transactiong on Signal Processing, 1993, 41(12):3397-3415. doi: 10.1109/78.258082
[5]	Wang Y H.Seismic time-frequency spectral decomposition by matching pursuit[J].Geophysics, 2007, 72(1):13-20. http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=GPYSA7000072000001000V13000001&idtype=cvips&gifs=Yes
[6]	刘继承, 富爽.基于MP算法的快速地震信号谱分析[J].计算机技术与发展, 2010, 20(7):231-234. doi: 10.3969/j.issn.1673-629X.2010.07.059 Liu Jicheng, Fu Shuang.Fast spectral analysis of seismic signal based on matching pursuits algorithm[J].Computer Technology and Development, 2010, 20(7):231-234. doi: 10.3969/j.issn.1673-629X.2010.07.059
[7]	赵中华, 王文延.基于时频分析的去除魏格纳交叉干扰项的方法[J].北京交通大学学报, 2010, 34(6):81-85. doi: 10.3969/j.issn.1673-0291.2010.06.018 Zhao Zhonghua, Wang Wenyan.Simulation of method to eliminate cross-term in Wigner distribution based on matching pursuits in time-frequency domain[J].Journal of Beijing Jiaotong University, 2010, 34(6):81-85. doi: 10.3969/j.issn.1673-0291.2010.06.018
[8]	王纯伟, 杨胜利.基于地震信号的匹配追踪算法[J].科教前沿, 2010, 7(6):443;460. http://d.old.wanfangdata.com.cn/Periodical/kjxx201007032 Wang Chunwei, Yang Shengli.Based on the matching pursuit algorithm of seismic signal[J].Science and Education, 2010, 7(6):443;460. http://d.old.wanfangdata.com.cn/Periodical/kjxx201007032
[9]	陈发宇, 杨长春.基于MP方法的地震信号快速分解算法[J].地球物理学进展, 2007, 22(6):1692-1697. doi: 10.3969/j.issn.1004-2903.2007.06.002 Chen Fayu, Yang Chanchun.Seismic signal's decomposition based on matching pursuit method[J].Progress in Geophysics, 2007, 22(6):1692-1697. doi: 10.3969/j.issn.1004-2903.2007.06.002
[10]	陈学华. 时频分布与地震信号谱分析研究[D]. 成都: 成都理工大学, 2006.
[11]	王培茂. 地震信号时频特征表示表示方法及应用[D]. 长春: 吉林大学, 2008.