物探与化探2012，Vol.36Issue(2)：256-259,4.
层状介质任意形状回线源瞬变电磁场正反演
TEM FORWARD AND INVERSION OF ARBITRARY SHAPE LOOP SOURCE IN LAYERED MEDIA
摘要
Abstract
The EM field of arbitrary shape loop can be regarded as EM field with the summation of many horizontal electric dipoles; therefore, as long as we work out the horizontal electric dipoles of the EM field and add them up, we can get the EM field of the arbitrary shape loop. The key of this method is the division of electric dipoles in arbitrary shape loop. In this paper, according to distance from the measuring point to the line of loop, each line of loop is divided into many small pieces with each piece satisfying the condition of horizontal electric dipole, and then numerical integration of horizontal electric dipole is carried out. In this way, the EM field of the whole loop can be obtained. Tests show that this method can not only reduce calculation amount but also improve calculation precision.关键词
瞬变电磁场/回线源/正反演/回线剖分/水平电偶极子Key words
TEM field/ arbitrary shape loop source/ forward and inversion/loop division/horizontal electric dipoles分类
天文与地球科学引用本文复制引用
李建平,李桐林,张亚东..层状介质任意形状回线源瞬变电磁场正反演[J].物探与化探,2012,36(2):256-259,4.基金项目
国家自然科学基金项目(41104068) （41104068）
国家高技术研究发展计划项目(2007AA060601) （2007AA060601）
山东科技大学科学研究“春营计划”项目(2009AZZ010) （2009AZZ010）
