Efficient Low-Frequency Inversion of 3-D Buried Objects with Large Contrasts

Tie Jun Cui, Yao Qin, Yuan Ye, Jing Wu, Gong Li Wang, Weng Cho Chew

Research output: Contribution to journalArticlepeer-review


An efficient inversion method is proposed using Cui et al.'s high-order extended Born approximations to reconstruct the conductivity object function of three-dimensional dielectric objects buried in a lossy earth. High-order solutions of the object function are obtained, which have closed-form relations to the linear inverse-scattering solution. Because such relations can be evaluated quickly using the fast Fourier transform, the high-order solutions have similar simplicity as the linear inversion. When the contrasts of buried objects are large, the high-order solutions are much more accurate due to the approximate consideration of multiple-scattering effects within the objects. Hence, good-resolution images can be obtained for large-contrast objects using the new method by only solving a linear inverse problem. Numerical experiments have shown the validity and efficiency of the proposed method.

Original languageEnglish (US)
Pages (from-to)3-9
Number of pages7
JournalIEEE Transactions on Geoscience and Remote Sensing
Issue number1
StatePublished - Jan 2006


  • Born approximation
  • extended Born (ExBorn) approximation
  • high-order formulations
  • linear inversion
  • low-frequency detection
  • nonlinear inversion

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Earth and Planetary Sciences(all)


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