物探化探计算技术2012，Vol.34Issue(5)：518-522,5.DOI:10.3969/j.issn.1001-1749.2012.05.03
基于含可变因子广义S变换的瑞雷面波频散曲线提取方法
THE METHOD OF RAYLEIGH WAVE DISPERSION CURVE EXTRACTION BASED ON GENERALIZED S-TRANSFORM WITH VARIABLE-FACTORS
周竹生 1杨朋凯 1陈友良1
作者信息
- 1. 中南大学地球科学与信息物理学院,湖南长沙410083
- 折叠
摘要
Abstract
The key step of surface wave data processing is to extract its dispersion curve. As the frequency resolution and time resolution can not be taken into account by S-transform or the generalized S-transform for the whole time samples simultaneously, a new method by using the generalized S-transform with variable-factors to extract dispersion cure of transient Rayleigh wave is present. With the variable-factors, the width of gaussian window versus frequency varies as expected, rather than simply narrows as frequency increasing. This method can improve the frequency resolution and the time resolution of the local bands with purpose, especially the low and high frequency bands. The results of theoretical model testing and real data trials show that the method of surface wave dispersion curve extraction based on generalized S-transform with variable-factors is feasible and practical.
关键词
瑞雷面波/S变换/广义S变换/可变因子/频散曲线Key words
ayleigh wave/ S-transform/ generalized S-transform/ variable-factors/ dispersion curve分类
天文与地球科学引用本文复制引用
周竹生,杨朋凯,陈友良..基于含可变因子广义S变换的瑞雷面波频散曲线提取方法[J].物探化探计算技术,2012,34(5):518-522,5.
