摘要
从信号的处理、分析入手,基于MATLAB小波分析工具箱的平台,透过傅里叶变换和小波变换对爆破振动信号进行特征分析,构建爆破振动信号不同频带振动分量的时频图谱;从能量角度出发,基于小波能量法,以小波频带能量作为研究对象,探求爆破振动信号不同频带能量的分布特征及内在规律性,以此探讨爆破地震波的作用机制和行为特征。
From signal processing and analyzing,and based on the platform of wavelet analysis toolkit,the characteristic of blasting vibration signals are analyzed by using wavelet transform and Fourier transform technology,and to make the time-frequency figures of different frequency bands of certain blasting vibration signals.On the view of energy,and based on energy wavelet method,the distribution features and inherent laws of different frequency bands are explored and furthermore,to discusse the effective mechanisms and features about the blasting seismic wave.
出处
《爆破》
CSCD
北大核心
2010年第4期109-112,115,共5页
Blasting
关键词
傅里叶变换
小波变换
小波频带能量
特征分析
Fourier transform
wavelet transform
wavelet energy
characteristics analysis
