This paper is concerned with estimation of electrical conductivity in Maxwell equations. The primary difficulty lies in the presence of numerous local minima in the objective functional. A wavelet multiscale method is introduced and applied to the inversion of Maxwell equations. The inverse problem is decomposed into multiple scales with wavelet transform, and hence the original problem is reformulated to a set of sub-inverse problems corresponding to different scales, which can be solved successively accor...
【英文摘要】
This paper is concerned with estimation of electrical conductivity in Maxwell equations. The primary di?culty lies in the presence of numerous local minima in the objective functional. A wavelet multiscale method is introduced and applied to the inversion of Maxwell equations. The inverse problem is decomposed into multiple scales with wavelet transform, and hence the original problem is reformulated to a set of sub-inverse problems corresponding to different scales, which can be solved successively accordi...
【基金】
supported by the Program of Excellent Team of Harbin Institute of Technology
【更新日期】
2009-08-24
【分类号】
O241
【正文快照】
Introduction The inversion of Maxwell equations has shown significant potential in oil and gas explo- ration. It also has important application in mineral, geothermal exploration and general geo- logic mapping. 3D-inversion has been used successfully to m
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