Simulation of low-frequency scattering from penetrable objects in layered medium by current and charge integral equations


Journal Article

© 2018 IEEE. This paper presents a novel accurate and stable current and charge integral equation (CCIE) solver for the low-frequency scattering of penetrable objects in layered medium (LM). To the best of our knowledge, this is the first time to extend CCIE into LM simulations at low frequency. In order to integrate the matrix-friendly LM Green's functions (LMGFs) into CCIE, we have rederived them to define new quasi-vector/scalar potentials, which are able to annihilate the frequency singularity in the original LMGFs. Moreover, an effective preconditioner is adopted to improve the conditioning of impedance matrices. In comparison with other perconditioners, this method performs much better. The excellent performance of this new CCIE solver is then demonstrated by numerical experiments.

Full Text

Duke Authors

Cited Authors

  • Ren, Y; Zhao, SW; Chen, Y; Hong, D; Liu, QH

Published Date

  • November 1, 2018

Published In

Volume / Issue

  • 56 / 11

Start / End Page

  • 6537 - 6546

International Standard Serial Number (ISSN)

  • 0196-2892

Digital Object Identifier (DOI)

  • 10.1109/TGRS.2018.2840145

Citation Source

  • Scopus