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《Science of Surveying and Mapping》 2009-05
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Data denoising based on Wavelet threshold in marine magnetic survey

YU Bo①,ZHAI Guo-jun②,LIU Yan-chun①,XIAO Fu-min①(①Department of Hydrography and Cartography,Dalian Naval Academy,Danlian 116018,China;②Tianjin Institute of Hydrographic Surveying and Charting,Tianjin 300061,China)  
Wave noise and random noise are remarkable factors in influencing accuracy of processing of marine magnetic survey.A new de-noising algorithm based on wavelet threshold is presented to improve the precision of de-noising.Frequency-spectral analysis for magnetic anomaly with noise is given to decide the scale of wavelet multi-resolution analysis.By the calculation,it is shown that the new algorithm can effectively separate noise and actual high frequency and improve the precision and reliability of de-noising.
【Fund】: 国家自然科学基金(40671161)
【CateGory Index】: P229
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