| 小波包在可控震源地震信号时延估计中的应用 |
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| 引用本文： | 蒋忠进,林君,陈祖斌. 小波包在可控震源地震信号时延估计中的应用[J]. 吉林大学学报(信息科学版), 2003, 21(2): 105-109 |
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| 作者姓名： | 蒋忠进 林君 陈祖斌 |
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| 作者单位： | 吉林大学,电子科学与工程学院,国土资源部现代地球物理仪器开放研究实验室,吉林,长春,130026 |
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| 基金项目： | 国家自然科学基金资助项目(49674232)，国家863计划资助项目(2002AA135240) |
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| 摘 要： | 在可控展源地展勘探信号处理中，利用发射信号和反射信号之间的时频分布相似性，提出了用小波包变换时频分布的二维相关算法，估计接收信号中各个反射信号分量的时间延迟。该方法能从信噪比为-4dB的接收信号中难确地对反射信号进行检测和时延估计。
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| 关 键 词： | 小波包 时频分布二维相关 时延估计 可控震源 |
| 文章编号： | 1671-5896(2003)02-0105-05 |
| 修稿时间： | 2002-11-20 |
Application of wavelet packet in time-delay estimation of signal of vibroseis exploration |
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| JIANG Zhong-jin,LIN Jun,CHEN Zu-bin. Application of wavelet packet in time-delay estimation of signal of vibroseis exploration[J]. Journal of Jilin University:Information Sci Ed, 2003, 21(2): 105-109 |
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| Authors: | JIANG Zhong-jin LIN Jun CHEN Zu-bin |
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| Abstract: | In the signal processing of vibroseis exploration, utilizing the compa rability between the time-frequency distributions of sent signal and reflected s ignals, wavelet-packet time-frequency distribution's two-dimensional c orr elation arithmetic is used to estimate the time delays of the reflected signals in the r eceived signal. The experiment of simulation shows that this arithmetic can dete ct the reflected signals successfully from a -4 dB received signal and estimate the time delays accurately. |
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| Keywords: | Wavelet packet Time-frequency distribution's two-dimension correlation Time-delay estimation Vibroseis |
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