CAJ | 학술논문

针对地震波信号本身的复杂性，在接收和处理地震波信号的各个阶段都可能引入噪声的问题，提出了采用小波变换对地震波信号进行降噪的方法，小波变换降噪方法在去除掉高频噪声的同时保留了信号的高频成分，是一种比傅立叶变换更有效的降噪方法。对比了几种小波去噪的方法，从不同的性能指标中优化出针对地震波信号的环境特点最为有效的降噪方法，从而达到有效提取有用信号的目的。
침대지진파신호본신적복잡성，재접수화처리지진파신호적각개계단도가능인입조성적문제，제출료채용소파변환대지진파신호진행강조적방법，소파변환강조방법재거제도고빈조성적동시보류료신호적고빈성분，시일충비부립협변환경유효적강조방법。대비료궤충소파거조적방법，종불동적성능지표중우화출침대지진파신호적배경특점최위유효적강조방법，종이체도유효제취유용신호적목적。
In order to solve the problem of the complexity of seismic wave signal and noise probably introduced in the whole course of accepting and disposing seismic wave signal, a de-noising approach using wavelet transform is proposed. Wavelet Transform is adapted to reach the purpose of reducing the noise in the seismic wave signal and meanwhile retain signal＇s high frequency. By comparing different de-noising methods, the most efficient method would be adopted to distill the useful signal.