Accession Number:

ADA615928

Title:

Characterizing Broadband Acoustic Propagation Scintillation and Modelling Scattering and Reverberation for Sensing in a Random Ocean Waveguide

Descriptive Note:

Annual rept.

Corporate Author:

NORTHEASTERN UNIV BOSTON MA

Personal Author(s):

Report Date:

2014-09-30

Pagination or Media Count:

4.0

Abstract:

The objective of this proposal is to 1 determine and quantify the effect of signal bandwidth and measurement time on ocean acoustic transmission scintillation statistics in both the saturated and partially saturated regimes for a shallow water waveguide, 2 develop and enhance unified physics-based models for broadband target scattering and reverberation in random range-dependent ocean waveguides by including the matched-filter, applicable to scattering from seabed and seafloor features, water-column scatterers such as bubble clouds, fish groups, plankton, and extended targets such as BBN hoses, submarines and marine mammals, including the potential effects of multiple scattering, dispersion, and shadowing or attenuation due to forward scattering. 3 Extract ambient noise characteristics from shipping, biological, geological, and physical processes and to apply these for environmental sensing.

Subject Categories:

  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE