A Contrast Source Inversion Algorithm Formulated Using the Log-Phase Formulation
Joint Authors
Paulsen, Keith D.
Meaney, Paul M.
Rubæk, Tonny
Source
International Journal of Antennas and Propagation
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-10
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The contrast source inversion (CSI) algorithm was introduced for microwave imaging in 1997 and has since proven to be one of the most successful algorithms for nonlinear microwave tomography.
In the CSI algorithm, the nonlinear integral equation, which must be solved to extract the constitutive electromagnetic parameters of the object under test from the microwave measurements, is represented by two linear equations, known as the data and the object equations.
In this paper, the data equation in the CSI algorithm is reformulated using the so-called log-phase formulation.
In this formulation, the measured data is represented by the change in the logarithm of the amplitude and the change in the unwrapped phase.
This formulation has previously been applied for nonlinear tomography within the framework of a Gauss-Newton based algorithm for detection of breast cancer.
Here, significant improvements have been observed compared to the more commonly used real-imaginary formulation.
The modified CSI algorithm is tested on both simulated data and on a measurement of a breast.
It is shown that for imaging setups with large differences in the measured signals, the new formulation of the data equation significantly improves the performance of the CSI algorithm
American Psychological Association (APA)
Rubæk, Tonny& Meaney, Paul M.& Paulsen, Keith D.. 2011. A Contrast Source Inversion Algorithm Formulated Using the Log-Phase Formulation. International Journal of Antennas and Propagation،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-503178
Modern Language Association (MLA)
Rubæk, Tonny…[et al.]. A Contrast Source Inversion Algorithm Formulated Using the Log-Phase Formulation. International Journal of Antennas and Propagation No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-503178
American Medical Association (AMA)
Rubæk, Tonny& Meaney, Paul M.& Paulsen, Keith D.. A Contrast Source Inversion Algorithm Formulated Using the Log-Phase Formulation. International Journal of Antennas and Propagation. 2011. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-503178
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-503178