摘要
用最大熵求解二维时域逆散射问题的层析成像算法反演井间、ＶＳＰ和ＳＲＰ中的二维介质波速分布。首先给出时域散射场与介质扰动的关系式，然后，应用最大熵剑桥算法从所有满足时域散射数据的模型中挑选图像熵最大的模型作为反演结果，并给出了该算法的实现步骤。数值试验的结果表明，本文算法用于反演含噪声，不完全的时域波场数据时，十分有效。
The algorithm of solving 2D inverse scattering in time domain using maximum entropy is Proposed for reconstructing the velocity distribution in Corss-hole, VSP and SRP imaging system.At first, the relationship between scattering field in time domain and perturbation function is derived.Then, the model with maximum entropy is selected as inversed result by maximum entropy Cambridge algorithm and rcalization steps of this algorithm is given in this paper.In the computer numerical experiment, the results show that the algorithm is effective to inverse incomplete wave field data with noise and the image quality is largely improved.
出处
《地球物理学报》
SCIE
EI
CSCD
北大核心
1994年第5期673-681,共9页
Chinese Journal of Geophysics
基金
国家自然科学基金会
中国科学院
中国石油天然气总公司
大庆石油管理局联合资助
关键词
时域逆散射
最大熵
CT
Tomography
Cross-holes
VSP
SRP
Inverse scattering in time domain
Maximum entropy Cambridge algorithm.
