| 复小波包域的微震信号分析提取方法 |
| |
| 引用本文： | 谢周敏,陈大庆.复小波包域的微震信号分析提取方法[J].华南地震,2009,29(3):25-32. |
| |
| 作者姓名： | 谢周敏 陈大庆 |
| |
| 作者单位： | 1. 中国地震局地壳应力研究所,北京,100085
2. 广东省地震局,广东,广州,510070 |
| |
| 基金项目： | 国家自然科学基金资助项目，地震行业科研专项项目，中国地震局地壳应力研究所基本科研业务专项目资金资助项目 |
| |
| 摘 要： | 提出了一种在复小波包域分析提取微震信号的新方法。此方法先采用复小波包分解同时获得信号的幅值信息和相位信息，再采用一种称为“比值加权”的复小波包重构法，重构出信噪比大大增强的微震信号。实际应用表明这种新方法在提取微震信号，提高信噪比方面效果显著。
|
| 关 键 词： | 复小波包变换 小波相频特征 微震信号分析 |
Microseismic Signal Analysis and Extraction Method in Complex Wavelet Field |
| |
| XIE Zhoumin,CHEN Daqing.Microseismic Signal Analysis and Extraction Method in Complex Wavelet Field[J].South China Journal of Seismology,2009,29(3):25-32. |
| |
| Authors: | XIE Zhoumin CHEN Daqing |
| |
| Institution: | XIE Zhoumin and CHEN Daqing (1. Institute of Crustal Dynamics, CEA, Beijing 100085, China,＂ 2. Earthquake Administration of Guangdong Province, Guangzhou 510070, China) |
| |
| Abstract: | In this paper, we propose a new method of microseismic signal analysis and extraction performed in complex wavelet field. In this method, we first get the signal amplitude and phase information using complex wavelet packet decomposition, then perform a complex wavelet reconstruction using the ＂weighted ratio＂ method, and finally reconstruct a microseismic signal with a much higher signal-to-noise ratio. The practical application of this new method shows that it is an effective method for exacting microseismic signals and improving signal-tonoise ratios. |
| |
| Keywords: | Complex wavelet packet Phase and frequency characteristics of wavelet Microseismic signal analysis |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
