Accession Number:

ADA272003

Title:

Wavelet Based Cumulant Processing

Descriptive Note:

Annual rept. 1 Oct 92-30 Sep 93,

Corporate Author:

TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s):

Report Date:

1993-09-30

Pagination or Media Count:

6.0

Abstract:

The objective of this program is to develop appropriate time- frequency signal processing methods for the analysis of the transient response of mechanical systems and structures. The focus of this program is on mid- frequency 2-20ka target strength measurements. At higher frequencies, structures of interest respond primarily as rigid, or inelastic, scatterers. However, in these same structures at the mid-frequency and lower ranges, significant structural vibrations in the form of traveling waves can be created by the incident sound pressure. These traveling waves in turn cause sound to be reradiated from the structures in a rather complicated fashion at significant sound pressure levels. This reradiation is referred to as elastic scattering.

Subject Categories:

  • Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE