QL-Born迭代法电磁散射计算

计算物理 ›› 2003, Vol. 20 ›› Issue (2): 169-172.

QL-Born迭代法电磁散射计算

赵连锋, 曹俊兴, 潘显军, 唐建光

成都理工大学, 四川成都 610059

收稿日期:2001-10-22 修回日期:2002-02-05 出版日期:2003-03-25 发布日期:2003-03-25
作者简介:赵连锋(1972-),男(蒙古),内蒙古赤峰,博士生,从事地震层析成像、电磁散射成像方面的研究,成都理工大学信息工程学院地球物理系,成都610059.
基金资助:
成都理工大学油气藏地质及开发工程国家重点实验室资助项目

Electromagnetic Scattering Calculation Based on Iterative QL-Born Approximation

ZHAO Lian-feng, CAO Jun-xin, PAN Xian-jun, TANG Jian-guang

Chengdu University of Technology, Chengdu 610059, China

Received:2001-10-22 Revised:2002-02-05 Online:2003-03-25 Published:2003-03-25

摘要/Abstract

摘要： 积分方程法是多维电磁响应的数值模拟和反演计算的有效方法之一.在线性化散射电磁场积分方程的基础上,采用迭代Born近似法进行了电导率成像反演.针对迭代Born近似法反演依赖初始模型,而QL近似法无需给定初值的特点,提出了两步法(QL-Born迭代法),用QL近似法计算的结果作为Born迭代法的初始模型,避免人为设置初值,并进行了数值实验.

关键词: 积分方程法, 迭代Born近似, QL近似法, QL-Born迭代法

Abstract: Integral equation method is one of effective methods of numerical simulation and inversion calculation for multi-dimensional electromagnetic response.Based on the linearization of the scattering electromagnetic integral equation, conductance imaging using iterative Born approximation is effective.Aiming at the characteristics that iterative Born approximation inversion depends on the initial model and that QL approximation doesn't need initial value, the two step method,iterative QL-Born approximation method,is put forward,which takes the result of QL inversion as the initial model of the iterative Born approximation method and avoids contrived initialization.The iterative QL-Born approximation method is effective and testified by numerical experiments

Key words: integral method, QL approximation, Born approximation, iterative QL-Born approximation

中图分类号:

赵连锋, 曹俊兴, 潘显军, 唐建光. QL-Born迭代法电磁散射计算[J]. 计算物理, 2003, 20(2): 169-172.

ZHAO Lian-feng, CAO Jun-xin, PAN Xian-jun, TANG Jian-guang. Electromagnetic Scattering Calculation Based on Iterative QL-Born Approximation[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2003, 20(2): 169-172.