【摘要】 传统时频分析方法(如傅立叶变换、短时傅立叶变换、小波变换、S变换等)的时频分辨性均不佳,在实际应用中受到一些限制,难以满足高精度时频分析要求.广义S变换,引入λ和p两个参数对S变换进行了扩展,其时频分析效果得到较大提高.对广义S变换方法原理进行了深入研究,编写了广义S变换时频分析程序.通过非平稳线性调频信号和4种典型沉积旋回模型分析,证实了广义S变换的可靠性及优越性.最后,将该方法推广到实际地震资料沉积旋回分析中,取得了良好的效果.更多还原

【Abstract】 The time-frequency resolution of traditional time-frequency analysis methods(such as Fourier transform,short time Fourier transform,wavelet transform,S transformation,etc.) are not high enough,they are very difficult to meet the high-accuracy time-frequency analysis,so their application is limited.Generalized S transfonn(GST),due to introducing X and p parameters to change the window function of S transform,its time-frequency resolution is improved greatly.The GST time-frequency analysis program is written after deeply studying the method of GST.The reliability and superiority of GST are proved by the analysis of non-stationary linear frequency modulation signals and four typical sedimentary cycle models.At last,the method is applied to the sedimentary cycle analysis of actual seismic data,and a good effect is achieved.更多还原