摘要
时频分析方法经历了富氏变换、短时富利叶变换、小波变换三个阶段。随着方法的改进 ,其在地学中的应用及研究范围也在不断拓宽 ,从对有关地质信号的能量补偿、滤波、压缩等处理 ,发展到通过信号的时频特征对地层的变化特征、沉积旋回性质等方面的研究。主要阐述了时频分析的概念。
The development of time-frequency analysis has three periods: Fourier transform, short-time Fourier transform, and wavelet transform. With the progressing of the time-frequency, the scale of its application is more and more extensive, from the signal processing to the striatgraphic character analysis. This theory describes the concept, the mothed and the development of time-frequency analysis and the application and future in the oil geophysical prospect.
出处
《世界地质》
CAS
CSCD
2000年第3期282-285,共4页
World Geology
关键词
时频分析
富氏变换
小波变换
石油勘探
物探
time-frequency analysis
Fourier transform
short-time Fourier transform
wavelet transform
