Time reversal techniques for multitarget identification

Franck Assous, Marie Kray, Frederic Nataf

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Since the seminal paper by M. Fink et al., time reversal is a subject of very active research. The main idea is to take advantage of the reversibility of wave propagation phenomena such as it occurs in acoustics, elasticity or electromagnetism in a non dissipative unknown medium to back-propagate signals to the sources that emitted them. Number of industrial applications have already been developed: touchscreen, medical imaging, non destructive testing and underwater communications. However, the resolution of these applications is restricted by the diffraction limit. We have designed a method named TRAC (Time Reversed Absorbing Conditions) that enables to go far beyond the diffraction limit without knowing the physical properties of the targets. We present here two examples of applications for multitarget identification.

Original languageEnglish
Title of host publication2013 IEEE International Ultrasonics Symposium, IUS 2013
Number of pages3
StatePublished - 2013
Event2013 IEEE International Ultrasonics Symposium, IUS 2013 - Prague, Czech Republic
Duration: 21 Jul 201325 Jul 2013

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727


Conference2013 IEEE International Ultrasonics Symposium, IUS 2013
Country/TerritoryCzech Republic


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