Timefrequency analysis of acoustic scattering from elastic objects
Abstract
A timefrequency analysis of acoustic scattering from elastic objects was carried out using the timefrequency representation based on a modified version of the Wigner distribution function (WDF) algorithm. A simple and efficient processing algorithm was developed, which provides meaningful interpretation of the scattering physics. The time and frequency representation derived from the WDF algorithm was further reduced to a display which is a skeleton plot, called a vein diagram, that depicts the essential features of the form function. The physical parameters of the scatterer are then extracted from this diagram with the proper interpretation of the scattering phenomena. Several examples, based on data obtained from numerically simulated models and laboratory measurements for elastic spheres and shells, are used to illustrate the capability and proficiency of the algorithm.
 Publication:

Acoustical Society of America Journal
 Pub Date:
 June 1990
 DOI:
 10.1121/1.399082
 Bibcode:
 1990ASAJ...87.2359Y
 Keywords:

 Acoustic Scattering;
 Elastic Bodies;
 Frequency Response;
 Sound Waves;
 Time Functions;
 Wave Scattering;
 Quantum Mechanics;
 Signal To Noise Ratios;
 Wave Interaction;
 Acoustics