摘要
主要应用傅立叶变换方法计算各种信号的振幅谱和相位谱。通过对一个球形信号进行傅立叶正反变换,发现用相位谱恢复的图形轮廓比振幅谱恢复的图形轮廓清晰。相位在信号分析中,特别是对于所要研究的地震信号尤为重要。但是,相位谱的常规计算及显示方法很难满足解释要求,就通过改善相位谱的常规计算及显示方法,并用一个简单地震模型例子,说明了改善后的相位谱更容易被解释和利用。
This paper presents computation of the signal＇s amplitude spectrum and phase spectrum the Fourier transform. Taking the sphere signal as an example, it is found that the phase spectrum is clearer than the amplitude one in resuming input signal. It is pointed that the phase is very important in signal analysis, especially in the seismic signal analysis. But the general method of phase computing and display is very difficult for us to interpret, so the computation and display method are improved. And a simple seismic model is used to demonstrate this method is effective.
出处
《地球科学与环境学报》
CAS
2005年第4期87-89,共3页
Journal of Earth Sciences and Environment
基金
中国华油集团项目(21712566)
关键词
相位谱
地震信号分析
频谱分析
地震勘探
phase spectrum
seismic signal analysis
frequency spectrum analysis
