Comparison between beamforming and super resolution imaging algorithms for non-destructive evaluation

Chengguang Fan, Bruce W. Drinkwater

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

In this paper the performance of total focusing method is compared with the widely used time-reversal MUSIC super resolution technique. The algorithms are tested with simulated and experimental ultrasonic array data, each containing different noise levels. The simulated time domain signals allow the effects of array geometry, frequency, scatterer location, scatterer size, scatterer separation and random noise to be carefully controlled. The performance of the imaging algorithms is evaluated in terms of resolution and sensitivity to random noise. It is shown that for the low noise situation, time-reversal MUSIC provides enhanced lateral resolution when compared to the total focusing method. However, for higher noise levels, the total focusing method shows robustness, whilst the performance of time-reversal MUSIC is significantly degraded.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics (AIP)
Pages171-178
Number of pages8
Volume1581 33
ISBN (Print)9780735412118
DOIs
Publication statusPublished - 1 Jan 2014
Event40th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2013): Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013 - Baltimore, MD, United States
Duration: 21 Jul 201326 Jul 2013
Conference number: 40

Conference

Conference40th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2013)
Abbreviated titleQNDE 2013
Country/TerritoryUnited States
CityBaltimore, MD
Period21/07/1326/07/13

Keywords

  • Modeling
  • Noise
  • Post Processing
  • Resolution
  • Ultrasonic Array

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