基于短时Fourier变换的瑞雷面波相速度提取  

The Rayleigh Surface Wave Phase Velocity Extraction Based on Short-time Fourier Transform

作　　者：陈亚东[1] 戴华林[2] 

机构地区：[1]天津城建大学计算机与信息工程学院,天津300384 [2]天津城建大学计算中心,天津300384

出　　处：《天津城建大学学报》2015年第4期299-302,共4页Journal of Tianjin Chengjian University

基　　金：天津市自然科学基金(10JCYBJC00600)

摘　　要：瑞雷面波勘探的主要思想是利用瑞雷面波的频散特性来反映浅层地质问题.在分析常规Fourier变换提取瑞雷面波相速度的局限性的基础上,提出采用短时Fourier变换方法对实际资料进行处理,结果表明:短时Fourier变换提取瑞雷面波相速度的方法具有较高的准确性和可靠性,有很好的应用效果和发展前景.The main idea of Rayleigh wave exploration is making use of frequency dispersion of Rayleigh wave to reveal geology structure of low layer. Based on the limitation analysis of extraction of the Rayleigh wave speed by conventional Fourier transform, authors present a new use actual data processing method based on the short-time Fourier transform. The results show that the extraction of the Rayleigh wave speed by short-time Fourier transform is high accuracy and reliability, which has a good application effect and development prospects.

关 键 词：瑞雷面波 频散特性 时-频分析 短时Fourier变换 

分 类 号：P631.4[天文地球—地质矿产勘探]