HHT(Hilbert-Huang变换)是一种近年才发展起来的非线性信号处理方法,具有明确的物理意义、高度的精确性和自适应性,但在地震信号处理中尚未得到广泛的应用。简要介绍了HHT的方法原理,然后分析了模型信号和地震旋回体的HHT时频谱。结果表明:HHT对模型信号的识别能力强,且不同类型地震旋回体与其HHT时频谱之间存在对应关系,这为地震层序的划分以及进一步的沉积相分析提供理论依据。 HHT (Hilbert-Huang Transform) is a nonlinear signal processing method developed in recent years. It has a clear physical meaning, a high degree of accuracy and adaptability, but it has not been widely used in seismic signal processing. The method principle of HHT is briefly introduced, and then the HHT time-frequency spectrum of the model signal and seismic cyclone body is analyzed. The results show that HHT can recognize the model signals strongly, and there is a correspondence between different types of seismic cyclones and their HHT time-frequency spectra, which provides a theoretical basis for the division of seismic sequences and further analysis of sedimentary facies.