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探地雷达反问题的小波-同伦混合反演算法 被引量:5

Wavelet-Homotopy Hybrid Algorithm for Inverse Problem of Ground Penetrating Radar
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摘要 构造一种求解探地雷达反问题的小波-同伦混合反演算法.利用小波将反问题分解到不同尺度上,在最大尺度上采用同伦反演方法,求得次级尺度的初始近似解,在其余尺度上进行多次迭代修正,以获得全局最小点.算法结合小波反演和同伦反演的优点,数值结果表明其具有较强的全局搜索能力. A wavelet-homotopy hybrid inversion algorithm for inverse problem of ground penetrating radar (GPR) is proposed. Wavelet is applied to separate inverse problem into different scales. In the maximum scale, initial value of the next scale is found by a homotopy method. In other scales, iteration process is carried out to obtain the global minimum point. The algorithm takes advantages of wavelet analysis and homotopy inversion method. It shows high capability of global search.
出处 《计算物理》 EI CSCD 北大核心 2009年第1期87-93,共7页 Chinese Journal of Computational Physics
基金 国家自然科学基金(40374046) 海南省自然科学基金(10701)资助项目
关键词 探地雷达 MAXWELL方程 小波 同伦 混合反演 ground penetrating radar Maxwell' s equation wavelet homotopy hybrid inversion
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