地震波是一种非平稳信号,从根本上讲,传统的处理平稳信号的方法是不能从根本上分析非平稳信号的各种频谱特征的.从线性时频分析理论出发,运用Matlab信号处理工具箱,对抗震数值模拟中所用的地震波进行了系统全面的分析,提出了地震波输入的一些注意事项,并提出了相应的措施.
Seismic wave is non-stationary signal, strictly speaking, the traditional methods of dealing with stationary signal cannot analysis non-stationary signal effectively. In this article, the analysis of the seismic wave of the numerical analysis is based of linear time-frequency presentation and the signal toolbox of Matlab, the results of obtained are discussed and the measures are presented.