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

Research output: Contribution to journalArticle

  • Authors:
  • Ammar Abduljabbar
  • Mehmet E. Yavuz
  • Fumie Costen
  • Ryutaro Himeno
  • Hideo Yokota

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.

Bibliographical metadata

Original languageEnglish
Pages (from-to)1321-1329
Number of pages9
JournalIEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Early online date4 Jan 2017
DOIs
StatePublished - Mar 2017