地震信号的时-频分析

TIME-FREQUENCY ANALYSIS OF THE EARTHQUAKE SIGNALS

摘要:

通过对单频正弦波和实际地震信号的对比分析,表明时频分析应用于地震信号处理是有效的和可靠的,尤其是在希望获得频率成分随时间变化的规律时有普通傅里叶变换所不具有的优点.

Abstract:

Time-frequency analysis method is further expansion of Fourier transform.Earthquake signals may be decomposed into different frequency section on time-axis by time-frequency analysis method.Emulation study results show that time-fequency analysis method has a series of advantages while FFT methods do not have.The method is very effective in signals analysis.