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  • Research Article
  • Open Access

Optimum Detection of Ultrasonic Echoes Applied to the Analysis of the First Layer of a Restored Dome

  • 1Email author,
  • 1,
  • 1 and
  • 1
EURASIP Journal on Advances in Signal Processing20072007:026560

https://doi.org/10.1155/2007/26560

  • Received: 26 February 2007
  • Accepted: 19 June 2007
  • Published:

Abstract

Optimum detection is applied to ultrasonic signals corrupted with significant levels of grain noise. The aim is to enhance the echoes produced by the interface between the first and second layers of a dome to obtain interface traces in echo pulse B-scan mode. This is useful information for the restorer before restoration of the dome paintings. Three optimum detectors are considered: matched filter, signal gating, and prewhitened signal gating. Assumed models and practical limitations of the three optimum detectors are considered. The results obtained in the dome analysis show that prewhitened signal gating outperforms the other two optimum detectors.

Keywords

  • Information Technology
  • Quantum Information
  • Practical Limitation
  • Ultrasonic Signal
  • Optimum Detector

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Authors’ Affiliations

(1)
Departamento de Comunicaciones, Universidad Politécnica de Valencia, Valencia, 46022, Spain

References

  1. Gosálbez J, Salazar A, Bosch I, Miralles R, Vergara L: Application of ultrasonic nondestructive testing to the diagnosis of consolidation of a restored dome. Materials Evaluation 2006,64(5):492-497.Google Scholar
  2. Gustafsson MG: Nonlinear clutter suppression using split spectrum processing and optimal detection. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 1996,43(1):109-124. 10.1109/58.484470View ArticleGoogle Scholar
  3. Scharf LL: Statistical Signal Processing. Addison-Wesley, Reading, Mass, USA; 1991.MATHGoogle Scholar
  4. Vergara L, Gosálbez J, Fuente JV, Miralles R, Bosch I: Measurement of cement porosity by centroid frequency profiles of ultrasonic grain noise. Signal Processing 2004,84(12):2315-2324. 10.1016/j.sigpro.2004.07.025View ArticleGoogle Scholar
  5. Vergara L, Páez JM: Backscattering grain noise modelling in ultrasonic non-destructive testing. Waves in Random Media 1991,1(1):81-92. 10.1088/0959-7174/1/1/008View ArticleGoogle Scholar
  6. Narayanan VM, Molthen RC, Shankar PM, Vergara L, Reid JM: Studies on ultrasonic scattering from quasi-periodic structures. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 1997,44(1):114-124. 10.1109/58.585205View ArticleGoogle Scholar
  7. Ericsson L, Stepinski T: Algorithms for suppressing ultrasonic backscattering from material structure. Ultrasonics 2002,40(1–8):733-734.View ArticleGoogle Scholar

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