This paper presents a filtering approach that exploits structural differences between the grain and flaw echo through spectral correlation. Analytical and simulation results demonstrate that back-scattered energy from many randomly distributed scatterers within a resolution cell results in no spectral correlation, while back-scattered energy from resolution cells with only a few scatterers exhibits significant spectral correlation. Performance differences between simple spectral correlation filters and conventional spectral filters are discussed for simple and complex (more than one effective scattering center) defects.
|Number of pages||4|
|Journal||Proceedings - IEEE Ultrasonics Symposium|
|State||Published - 1995|
|Event||Proceedings of the 1995 IEEE Ultrasonics Symposium. Part 1 (of 2) - Seattle, WA, USA|
Duration: Nov 7 1995 → Nov 10 1995
ASJC Scopus subject areas
- Acoustics and Ultrasonics