Titre :

Quantification and mitigation of the effect of resynchronization errors in ultrasound sensor network for passive imaging in elastic plates

Auteur(s) :

Bouchakour, Omar [Auteur]
Transduction, Propagation et Imagerie Acoustique - IEMN [TPIA - IEMN]
Moulin, Emmanuel [Auteur]
Transduction, Propagation et Imagerie Acoustique - IEMN [TPIA - IEMN]
Chehami, Lynda [Auteur]
Université Polytechnique Hauts-de-France [UPHF]
Transduction, Propagation et Imagerie Acoustique - IEMN [TPIA - IEMN]
Smagin, Nikolay [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Titre de la revue :

Journal of the Acoustical Society of America

Pagination :

3283 - 3290

Éditeur :

Acoustical Society of America

Date de publication :

2024

ISSN :

0001-4966

Mot(s)-clé(s) en anglais :

Ultrasound
Flexural waves
Elastic modulus
Poisson's ratio
Sensors
Geographic information systems
Computer simulation
Probability theory
Optical metrology
Scattering theory

Discipline(s) HAL :

Sciences de l'ingénieur [physics]/Acoustique [physics.class-ph]
Physique [physics]/Physique mathématique [math-ph]
Sciences de l'ingénieur [physics]/Traitement du signal et de l'image [eess.SP]

Résumé en anglais : [en]

The problem of signal desynchronization in passive imaging based on noise correlation for defect detection in elastic plates is investigated. Although a post-processing resynchronization process relying on the symmetry of ...
Lire la suite >The problem of signal desynchronization in passive imaging based on noise correlation for defect detection in elastic plates is investigated. Although a post-processing resynchronization process relying on the symmetry of noise correlation functions can be applied prior to the imaging algorithm, perfect synchronization might not be achieved experimentally. Effect of such residual synchronization errors on the defect detection performance is quantified as a function of their probability density function. A mathematical regularization process is then proposed to reduce the standard deviation of the resynchronization errors by a factor of √( N-1)/N (N is the number of sensors), which results in a significant improvement in the detection performance. Finally, these theoretical results are validated through a simple flexural-wave propagation simulationLire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL