Continuous Wavelet Transform Based Frequency Dispersion Compensation Method for Electromagnetic Time-Reversal Imaging

Ammar Abduljabbar; Mehmet E.  Yavuz; Fumie Costen; Ryutaro Himeno; Hideo Yokota

doi:10.1109/TAP.2016.2647594

Continuous Wavelet Transform Based Frequency Dispersion Compensation Method for Electromagnetic Time-Reversal Imaging

Ammar Abduljabbar, Mehmet E. Yavuz, Fumie Costen, Ryutaro Himeno, Hideo Yokota

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Abstract

The invariance of wave equations in lossless media allows the Time Reversal (TR) technique to spatio-temporally refocus back-propagated signals in a given ultrawideband imaging scenario. However, the existence of dispersion and loss in the propagation medium breaks this invariance and the resultant TR focusing exhibits frequency and propagation duration dependent degradation. We propose an algorithm based on the continuous wavelet transform that tackles this degradation to improve focusing resolution under such conditions. The developed algorithm has been successfully applied to the scenario for localization of lung cancer.

Original language	English
Pages (from-to)	1321-1329
Number of pages	9
Journal	IEEE Transactions on Antennas and Propagation
Volume	65
Issue number	3
Early online date	4 Jan 2017
DOIs	https://doi.org/10.1109/TAP.2016.2647594
Publication status	Published - 4 Jan 2017

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abstract = "The invariance of wave equations in lossless media allows the Time Reversal (TR) technique to spatio-temporally refocus back-propagated signals in a given ultrawideband imaging scenario. However, the existence of dispersion and loss in the propagation medium breaks this invariance and the resultant TR focusing exhibits frequency and propagation duration dependent degradation. We propose an algorithm based on the continuous wavelet transform that tackles this degradation to improve focusing resolution under such conditions. The developed algorithm has been successfully applied to the scenario for localization of lung cancer.",

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AU - Costen, Fumie

AU - Himeno, Ryutaro

AU - Yokota, Hideo

PY - 2017/1/4

Y1 - 2017/1/4

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AB - The invariance of wave equations in lossless media allows the Time Reversal (TR) technique to spatio-temporally refocus back-propagated signals in a given ultrawideband imaging scenario. However, the existence of dispersion and loss in the propagation medium breaks this invariance and the resultant TR focusing exhibits frequency and propagation duration dependent degradation. We propose an algorithm based on the continuous wavelet transform that tackles this degradation to improve focusing resolution under such conditions. The developed algorithm has been successfully applied to the scenario for localization of lung cancer.

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DO - 10.1109/TAP.2016.2647594

M3 - Article

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JO - IEEE Transactions on Antennas and Propagation

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Continuous Wavelet Transform Based Frequency Dispersion Compensation Method for Electromagnetic Time-Reversal Imaging

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