Cross-Correlated Contrast Source Inversion

Cross-Correlated Contrast Source Inversion

Sun, S. (TU Delft Microwave Sensing, Signals & Systems)
Kooij, B.J. (TU Delft Microwave Sensing, Signals & Systems)
Jin, T. (National University of Defense Technology)
Yarovoy, Alexander (TU Delft Microwave Sensing, Signals & Systems)

2017-02-23

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.

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)

http://resolver.tudelft.nl/uuid:c550b123-921f-4031-8e09-5045984d7239

https://doi.org/10.1109/TAP.2017.2673758

0018-926X

IEEE Transactions on Antennas and Propagation, 65 (5), 2592 - 2603

Accepted author manuscript

Institutional Repository

journal article

© 2017 S. Sun, B.J. Kooij, T. Jin, Alexander Yarovoy