Geomagnetic interference data analysis based on wavelet packet denoisingChinese Full Text
XU Bin;GU Wei;Logistics Engineering College,Shanghai Maritime Univ.;
Abstract: Because of such phenomena as serious magnetic interference during daily port operations,and daily geomagnetic variation influence on the measurement for magnetic field at port degaussing stations, the interference rejection method based on wavelet packet denoising is used. In this method,the causes and characteristics of magnetic interference are drawn through analysis and simulation on interference source. Through the analysis on actual magnetic field measurement data,the influence of the magnetic interference on the Z component of geomagnetic field is drawn,where the interference results from daily port operations at port degaussing stations. The wavelet packet denoising algorithm is used to reconstruct the interfered magnetic field data by the transformation of wavelet packet basis and to suppress the interference. The results show that the method can suppress the interference effectively and has positive significance for improving accuracy of magnetic field measurement in port degaussing stations.
- DOI：
10.13340/j.jsmu.2014.01.014
- Series：
- Subject：
- Classification Code：
TN911.4
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