Accession Number:

ADA612394

Title:

Dual, Hyperfast Spectral Decompositions for Sound Propagation on the Continental Shelf: Acoustic Lensing, Imaging, Communication and 'Seeing' Inside Shadow Zones

Descriptive Note:

Annual rept.

Corporate Author:

TURIN UNIV (ITALY)

Personal Author(s):

Report Date:

2006-09-30

Pagination or Media Count:

7.0

Abstract:

LONG-TERM GOALS 1. A nonlinear Fourier representation of sound propagation and internal soliton dynamics in the ocean is under development to analyze time series of internal wave data, sound speed profiles and to model sound waves propagating in the oceanic wave guide. The approach may be viewed as a generalization of linear Fourier analysis and is loosely referred to as Nonlinear Fourier Analysis or the Generalized Fourier Transform GFT. 2. The present report focuses on new results for application of GFT methods to acoustic wave propagation. 3. Application of the method as a tool for searching inside shadow zones and for acoustic communications is also underway.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE