【摘要】 结合希尔伯特-黄变换方法,根据信号背景噪音时间延续性假设,提出了一种自适应地震信号去噪算法。利用该算法实现了台站地震监测信号的去噪分析。分析表明:1)该去噪算法能根据背景信号特性有效去除信号的低频干扰;2)该算法可自适应完成信号分解去噪,计算效率高,无时间分辨率和频率分辨率问题;3)该算法处理高频干扰存在缺陷,有待进一步完善。更多还原

【Abstract】 On the basis of the Hilbert-Huang Transform(HHT) method and according to the assumption of the background noise signal continuity in time domain,an adaptive algorithm of seismic signal denoising is presented.The algorithm,as used to analyze the seismic wave,has certain positive results.Through the analysis following conclusions can be drawn.1)According to the background noise signal characteristics,the algorithm can effectively remove the low-frequency noise signal from the original signal.2)By the use of the adaptive algorithm we can decompose the signal and denoising,and avoid the time resolution and frequency resolution problem.3)The algorithm has the flaw for dealing with high-frequency interferenc,and so needs to be improved.更多还原