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Multilevel fast-multipole algorithm for scattering from conducting targets above or embedded in a lossy half space

Publication ,  Journal Article
Geng, N; Sullivan, A; Carin, L
Published in: IEEE Transactions on Geoscience and Remote Sensing
July 1, 2000

An extension of the multilevel fast multipole algorithm (MLFMA), originally developed for targets in free space, is presented for the electromagnetic scattering from arbitrarily shaped three-dimensional (3-D), electrically large, perfectly conducting targets above or embedded within a lossy half space. We have developed and implemented electric-field, magnetic-field, and combined-field integral equations for this purpose. The nearby terms in the MLFMA framework are evaluated by using the rigorous half-space dyadic Green's function, computed via the method of complex images. Non-nearby (far) MLFMA interactions, handled efficiently within the multilevel clustering construct, employ an approximate dyadic Green's function. This is expressed in terms of a direct-radiation term plus a single real image (representing the asymptotic far-field Green's function), with the image amplitude characterized by the polarization-dependent Fresnel reflection coefficient. Examples are presented to validate the code through comparison with a rigorous method-of-moments (MoM) solution. Finally, results are presented for scattering from a model unexploded ordnance (UXO) embedded in soil and for a realistic 3-D vehicle over soil.

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Published In

IEEE Transactions on Geoscience and Remote Sensing

DOI

ISSN

0196-2892

Publication Date

July 1, 2000

Volume

38

Issue

4 I

Start / End Page

1561 / 1573

Related Subject Headings

  • Geological & Geomatics Engineering
  • 40 Engineering
  • 37 Earth sciences
  • 0909 Geomatic Engineering
  • 0906 Electrical and Electronic Engineering
  • 0404 Geophysics
 

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Geng, N., Sullivan, A., & Carin, L. (2000). Multilevel fast-multipole algorithm for scattering from conducting targets above or embedded in a lossy half space. IEEE Transactions on Geoscience and Remote Sensing, 38(4 I), 1561–1573. https://doi.org/10.1109/36.851956
Geng, N., A. Sullivan, and L. Carin. “Multilevel fast-multipole algorithm for scattering from conducting targets above or embedded in a lossy half space.” IEEE Transactions on Geoscience and Remote Sensing 38, no. 4 I (July 1, 2000): 1561–73. https://doi.org/10.1109/36.851956.
Geng N, Sullivan A, Carin L. Multilevel fast-multipole algorithm for scattering from conducting targets above or embedded in a lossy half space. IEEE Transactions on Geoscience and Remote Sensing. 2000 Jul 1;38(4 I):1561–73.
Geng, N., et al. “Multilevel fast-multipole algorithm for scattering from conducting targets above or embedded in a lossy half space.” IEEE Transactions on Geoscience and Remote Sensing, vol. 38, no. 4 I, July 2000, pp. 1561–73. Scopus, doi:10.1109/36.851956.
Geng N, Sullivan A, Carin L. Multilevel fast-multipole algorithm for scattering from conducting targets above or embedded in a lossy half space. IEEE Transactions on Geoscience and Remote Sensing. 2000 Jul 1;38(4 I):1561–1573.

Published In

IEEE Transactions on Geoscience and Remote Sensing

DOI

ISSN

0196-2892

Publication Date

July 1, 2000

Volume

38

Issue

4 I

Start / End Page

1561 / 1573

Related Subject Headings

  • Geological & Geomatics Engineering
  • 40 Engineering
  • 37 Earth sciences
  • 0909 Geomatic Engineering
  • 0906 Electrical and Electronic Engineering
  • 0404 Geophysics