Title :

Time-frequency characterization in support of broadband sonar transducer design

Author(s) :

Zakharia, Manell [Auteur]
Dubus, Bertrand [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Plantevin, Philippe [Auteur]

Conference title :

e-Forum Acusticum 2020

City :

Lyon

Country :

France

Start date of the conference :

2020-12-07

Book title :

e-Forum Acusticum 2020

Publication date :

2020

English keyword(s) :

sonar transducer
time-frequency
wide band

HAL domain(s) :

Physique [physics]/Mécanique [physics]/Acoustique [physics.class-ph]
Physique [physics]/Mécanique [physics]/Vibrations [physics.class-ph]

English abstract : [en]

Commonly used in ultrasonic pulse imaging, wideband transducers are becoming more and more popular in sonar area in various areas of application where the time resolution is a paramount issue such ...
Show more >Commonly used in ultrasonic pulse imaging, wideband transducers are becoming more and more popular in sonar area in various areas of application where the time resolution is a paramount issue such as: estimation of time of flight, communication, high resolution imaging, impedance and attenuation measurements, fine echo analysis....While, for most ultrasonic transducers, the power involved is rather small (about ten watts), for sonar transducers the power may exceeds several tens of kilowatts. Thus, for power efficiency considerations, sonar transducers are conventionally designed, at a given frequency, to convert the energy of an electric source into the acoustic energy without paying much attention to the fine temporal structure of transducer response. This has been satisfactory as long as narrow band systems are involved but becomes a limitation for wideband systems.In this paper, we are interested in wideband high-power systems. We will show how time-frequency approach can be used from the early design stage up to full system characterisation.Show less >

Language :

Anglais

Peer reviewed article :

Non

Audience :

Internationale

Popular science :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL