In longeriod magnetotelluric sounding measurement in the noisy area, the effective suppression of a variety of electromagnetic noises and the improvement of the quality of data constitute the core problem in long period magnetotelluric sounding data acquisition and data processing. As the longeriod magnetotelluric sounding data are characterized by nonlinear, nontationary and noninimum phase, in this paper the authors propose the EMD method to suppress the noise in longeriod magnetotelluric signals, and deals with the implementation details of the EMD algorithm. The authors applied the EMD algorithm to the longeriod magnetotelluric signal noise suppression, and the results show that the EMD method can effectively suppress the longeriod magnetotelluric noise.
覃庆炎, 王绪本, 罗威.
EMD方法在长周期大地电磁测深资料去噪中的应用[J]. 物探与化探, 2011, 35(1): 113-117.
QIN Qing-Yan, WANG Xu-Ben, LUO Wei. THE APPLICATION OF THE EMD METHODTO LONGERIOD MAGNETOTELLURIC SOUNDING DATA DENOISING. Geophysical and Geochemical Exploration, 2011, 35(1): 113-117.
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