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Application of time reversal to imaging electrical properties of inhomogeneous cylindrical objects

Authors :
Takashi Takenaka
Toshifumi Moriyama
Source :
The 8th European Conference on Antennas and Propagation (EuCAP 2014).
Publication Year :
2014
Publisher :
IEEE, 2014.

Abstract

A time-domain inverse scattering approach using time-reversed fields for reconstructing electrical parameters of cylindrical objects has been proposed in a previous work. The approach does not require the explicit knowledge of incident fields illuminating the object. The cost functional represented in terms of the time-reversed fields was minimized by a genetic algorithm (GA). In this paper, we propose a gradient-based minimization for reconstruction of an inhomogeneous object for which GA can not be applied due to computational complexity. The time-reversed fields are calculated by time-reversing the equivalent current sources determined by the total fields recorded on a measurement line. Numerical simulations are carried out to show the effectiveness of the proposed method.<br />8th European Conference on Antennas and Propagation, EuCAP 2014; The Hague; Netherlands; 6 April 2014 through 11 April 2014<br />Antennas and Propagation (EuCAP), 2014 8th European Conference on, pp.1334-1338; 2014

Details

Database :
OpenAIRE
Journal :
The 8th European Conference on Antennas and Propagation (EuCAP 2014)
Accession number :
edsair.doi.dedup.....5a05895c978e17fc66b32e8e360456a5
Full Text :
https://doi.org/10.1109/eucap.2014.6902023