NDLI: The Finite-Element Method Contrast Source Inversion Algorithm for 2D Transverse Electric Vectorial Problems

Content Provider	IEEE Xplore Digital Library
Author	Zakaria, A. LoVetri, J.
Copyright Year	1963
Abstract	The contrast source inversion algorithm is formulated using the finite-element method for two-dimensional transverse electric microwave imaging problems. Edge-based triangular elements with vector basis functions are utilized to solve the TE electromagnetic problem. A single finite-element method (FEM) mesh is used to model both the electric field as well as the contrast-source and contrast variables used in the inverse problem. The electromagnetic field is modeled by taking the unknown values to be the tangential components of the transverse electric field along the edges of each triangular element. The unknown contrast-source and contrast variables are located at the centroids of every triangular element of the same FEM mesh, but only inside the imaging domain. The adaptation of the FEM-contrast source inversion (FEM-CSI) algorithm to 2D-TE problems on such an arbitrary mesh requires the implementation of special transformation operators which are presented herein. The algorithm's capabilities are demonstrated by inverting the Fresnel experimental TE datasets as well as synthetically generated data.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	4757
Ending Page	4765
Page Count	9
File Size	1922114
File Format	PDF
ISSN	0018926X
Volume Number	60
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Imaging Vectors Finite element methods Image reconstruction Transmitters Inverse problems Image edge detection transverse-electric Contrast source inversion (CSI) finite-element method (FEM) microwave imaging
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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