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Proceedings Paper

Preconditioning technique in land mine imaging
Author(s): Yuriy A. Gryazin; Thomas R. Lucas
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Paper Abstract

Two novel solution methods for the inverse problem for the 2D Helmholtz equation are developed, tested and compared. The proposed approaches are based on a marching finite-difference scheme which requires the solution of an overdetermined system at each step. The preconditioned conjugate gradient method is used for rapid solution of these systems and an efficient preconditioner has been developed for this class of problems. The underlying target application is the imaging of land mines, which is formulated as an inverse problem for a 2D Helmholtz equation. The images represent the electromagnetic properties of the respective underground regions. Numerical results are presented.

Paper Details

Date Published: 13 August 2002
PDF: 10 pages
Proc. SPIE 4742, Detection and Remediation Technologies for Mines and Minelike Targets VII, (13 August 2002); doi: 10.1117/12.479083
Show Author Affiliations
Yuriy A. Gryazin, Idaho State Univ. (United States)
Thomas R. Lucas, Univ. of North Carolina/Charlotte (United States)


Published in SPIE Proceedings Vol. 4742:
Detection and Remediation Technologies for Mines and Minelike Targets VII
J. Thomas Broach; Russell S Harmon; Gerald J. Dobeck, Editor(s)

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