Abstract
In this paper, we improved the performance of the contrast source inversion (CSI) method by incorporating a so-called cross-correlated cost functional, which interrelates the state error and the data error in the measurement domain. The proposed method is referred to as the cross-correlated CSI. It enables better robustness and higher inversion accuracy than both the classical CSI and multiplicative regularized CSI (MR-CSI). In addition, we show how the gradient of the modified cost functional can be calculated without significantly increasing the computational burden. The advantages of the proposed algorithms are demonstrated using a 2-D benchmark problem excited by a transverse magnetic wave as well as a transverse electric wave, respectively, in comparison with classical CSI and MR-CSI.
Original language | English |
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Pages (from-to) | 2592 - 2603 |
Number of pages | 12 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 65 |
Issue number | 5 |
DOIs | |
Publication status | Published - 23 Feb 2017 |
Bibliographical note
Accepted author manuscriptKeywords
- Contrast source inversion (CSI)
- cross-correlated cost functional
- finite difference frequency domain (FDFD)
- multiplicative regularized contrast source inversion (MR-CSI)
- transverse electric (TE)
- transverse magnetic (TM)