Title :
A comparison of coded waveforms for air-coupled ultrasonic inspection
Author :
Ricci, Marco ; Laureti, S. ; Hutchins, DeLesley ; Davis, Lisa
Author_Institution :
Polo Sci. Didattico di Terni, Univ. degli Studi di Perugia, Perugia, Italy
Abstract :
This paper investigates various types of coded waveforms that could be used for air-coupled ultrasound. These are needed because of the low signal-to-noise ratios that are found in many air-coupled ultrasonic NDT measurements. The various algorithms are described, and their performance in the presence of noise demonstrated.
Keywords :
binary sequences; chirp modulation; correlation methods; inspection; noise; ultrasonic materials testing; air-coupled ultrasonic NDT measurements; air-coupled ultrasonic inspection; coded waveforms; nondestructive testing; signal-to-noise ratios; Chirp; Correlation; Testing; air-coupled; coded waveforms; cross-correlation; non-destructive testing; ultrasonic;
Conference_Titel :
Digital Signal Processing (DSP), 2013 18th International Conference on
Conference_Location :
Fira
DOI :
10.1109/ICDSP.2013.6622786
