Accession Number:

ADA621142

Title:

Advanced Multi-Frequency Inversion Methods for Classifying Acoustic Scatterers

Descriptive Note:

Annual rept.

Corporate Author:

BAE SYSTEMS SAN DIEGO CA

Personal Author(s):

• McGehee, Duncan E.
• Benfield, Mark C.
• Greenlaw, Charles F.
• Holliday, D. V.

Report Date:

2002-09-30

Pagination or Media Count:

7.0

Abstract:

The goals of this study are to develop species- and life-stage-specific acoustic scattering models based on morphologically-accurate digitizations of preserved or live-imaged zooplankton from coastal waters. These models will estimate scattering strength as a function of acoustical frequency, animal size, taxon, and orientation relative to the incidence angle. These predictions will improve our ability to estimate animal abundances by taxonmorphological class via inversion.

Descriptors:

• *ACOUSTIC SCATTERING
• *ZOOPLANKTON
• CLASSIFICATION
• COASTAL REGIONS
• INVERSION
• METHODOLOGY

Subject Categories:

• Biological Oceanography
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE