Application of wavelets to acoustic resonance-elastic targets surrounded by biologics
Open Access
- 1 January 1993
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 4 (15206149) , 492-495 vol.4
- https://doi.org/10.1109/icassp.1993.319702
Abstract
The application of wavelets is to study the resonance characteristics of an elastic target and more specifically the leaky Lamb waves in the acoustic scattering response from a thin shell. The authors also address the application of wavelets to acoustic backscattering from submerged thin shells surrounded by dispersive scatterers, e.g., biologics. The subsonic branch of the lowest order antisymmetric leaky Lamb wave contributes strongly to the backscatter from thin spherical shells in a frequency range designated as the midfrequency enhancement. This prominent contribution in the free-field backscattering from the shell is easily isolated by wavelet decomposition. Likewise, a wavelet decomposition can extract the midfrequency enhancement in the scattered field when the shell is surrounded by a diffuse collection of non-elastic scatterers.Keywords
This publication has 7 references indexed in Scilit:
- Ten Lectures on WaveletsPublished by Society for Industrial & Applied Mathematics (SIAM) ,1992
- Target description using wavelet transformPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1992
- Ray synthesis of the form function for backscattering from an elastic spherical shell: Leaky Lamb waves and longitudinal resonancesThe Journal of the Acoustical Society of America, 1991
- Acoustic data signaturing using cyclic correlations derived from the Wigher distributionThe Journal of the Acoustical Society of America, 1990
- Generalized target description and wavelet decomposition (sonar)IEEE Transactions on Acoustics, Speech, and Signal Processing, 1990
- Observations and modeling of the backscattering of short tone bursts from a spherical shell: Lamb wave echoes, glory, and axial reverberationsThe Journal of the Acoustical Society of America, 1989
- The acoustic scattering by a submerged, spherical shell. I: The bifurcation of the dispersion curve for the spherical antisymmetric Lamb waveThe Journal of the Acoustical Society of America, 1989