摘要
通过对S变换与短时傅立叶变换的对比,证明S变换具有多分辨率及自适应的特点,并将其应用于某岩溶场地勘察,对实测资料进行处理和解释。通过实例应用的分析表明,S变换的时频切片图中的异常反应比在时间剖面中的反应更清晰,对确定异常的位置、规模等都有很好的效果,有利于提高映像资料的解释准确性和精度。
Based on the comparison of S transform and short time Fourier transform,the S transform is proved to have the features of multi-resolutions and adaptive ability,and it is applied to a karst exploration project for processing and interpreting the measured data.The analysis shows that the abnormal reflection on the time-frequency slice map of the S transform is clearer than in the time section,which is useful for locating the abnormal position and scale and good at improving the accuracy and precision in the imaging data interpretation.
出处
《工程地球物理学报》
2012年第2期227-230,共4页
Chinese Journal of Engineering Geophysics
关键词
S变换
地震映像
时频分析
S transform
seismic imaging
time-frequency analysis