爆破震动信号的小波分析 English Version
Wavelet analysis for blasting seismic signals
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摘要: 首先将小波分析（ｗａｖｅｌｅｔａｎａｌｙｓｉｓ）理论应用到爆破震动信号分析中，以期促进这一理论在工程爆破领域内的发展；小波分析在时域和频域同时具有良好的局部化性质，而且对高频成分采用逐渐精细的时域和空域取样步长，可以聚焦到对象的任意细节，因此利用小波分析和处理像爆破震动这样具有突变特征的随机信号较富氏频谱分析更为适合。并对目前小波分析理论和应用进行了较为全面的总结，建立了适合于爆破震动信号分析的基小波，同时进行了实例分析。Abstract: This paper applies the theory of wavelet analysis to the field of blasting seismic signals processing,for promoting the application of wavelet analysis in the blasting engineering. As well as in the frequency domain, wavelet has good local character in the time domain, its step of time-frequency domain becomes fine little by little while the high frequency is analyzed, so it is better to process the high varying signals such as blasting seismic signals by the wavelet analysis than by the Fourier analysis. The authors summarize the theory and application of wavelet analysis,find the basic wavelet for blasting seismic signal analysis,and analyze a concrete engineering example.
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