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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Second-Order Adaptive Synchrosqueezing S Transform and Its Application in Seismic Ground Roll Attenuation
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Second-Order Adaptive Synchrosqueezing S Transform and Its Application in Seismic Ground Roll Attenuation

机译:二阶自适应同步性调节S转换及其在地震地面滚动衰减中的应用

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摘要

The time-frequency (TF) analysis always plays a major role in signal processing. In this letter, we propose a novel TF analysis method called the second-order adaptive synchrosqueezing S transform (ASST2) and apply it on seismic ground roll attenuation. ASST2 is a data-driven method so that it performs a highly sharp representation with a desirable resolution by the nature of the signal itself. Moreover, ASST2 is invertible that allows a reasonable reconstruction. By applying ASST2, the instantaneous features of ground rolls can be recognized exactly in the TF map and the desired signal can be recovered after suppressing the noise. The synthetic example proves the superiority of ASST2 in characterizing nonstationary signals. The application on field data also illustrates that the proposed ASST2 can attenuate ground rolls effectively and preserves most reflections.
机译:时频(TF)分析始终在信号处理中发挥重要作用。在这封信中,我们提出了一种新颖的TF分析方法,称为二阶自适应同步性转换(Asst2),并将其应用于地震地面卷衰减。 AST2是数据驱动方法,使得它通过信号本身的性质来执行具有所需分辨率的高度尖锐的表示。此外,Asst2可逆,允许合理的重建。通过施加ASST2,可以在TF图中精确地识别地辊的瞬时特征,并且在抑制噪声之后可以恢复所需的信号。合成的例子证明了ASST2在表征非间断信号时的优越性。现场数据的应用还示出了所提出的AST2可以有效地衰减磨损辊并保持大多数反射。

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