时频分析在实测瞬态瑞雷波相速度提取中的应用

详细信息

The application of time-frequency analysis to Rayleigh waves prospecting

1. Department of Computer Science and Technology, Tianjin Institute of Urban Construction, Tianjin 300384, China;
2. School of Geological Engineering and Science of Surveying, Chang'an University, Xi'an 710054, China;
3. School of Electronic and Information, Xi'an Jiaotong University, Xi'an 710049, China

摘要: 时频分析是近年发展起来的一个重要的、新的数学分支,目前已成为国际上极为活跃的研究领域。本文首先分析了瑞雷波的频散特性和传统的参数提取方法的缺陷,然后,利用时频分析的方法对实际资料进行了处理。处理结果表明,应用时频分析方法可以提高瑞雷波速提取的稳定性和可靠性。
- 时频分析 /
- 瑞雷波 /
- 频散特性 /
- 波速
Abstract: Time frequency analysis is an important and new branch of mathematics that has been developed recently.It has become a very active research field all over the world now.In this paper,first we analyze the frequency dispersion characteristic of Rayleigh wave and the shortcoming of the traditional method of parameter abstracting.Then we process the real data in the method of the time frequency analysis.The processing result notes that the method of time frequency analysis may improve stability and liability of extracting Rayleigh wave velocity.
- time frequency analysis /
- Rayleigh wave /
- frequency dispersion characteristic /
- wave velocity