Simulation of Acoustic Multipath Arrival Structure in the Barents Sea

In support of the Barents Sea Polar Front Experiment (BSPFEX) in September 1992 (Barents Sea Polar Front Group, 1992), the planned 224 Hz tomography signal transmissions from a near bottom sound source to a vertical receiver array consisting of 16 hydrophones were simulated. Acoustic rays were trace...

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Bibliographic Details
Main Author: Elliott, John M.
Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Format: Text
Language:English
Published: 1992
Subjects:
Physical and Dynamic Oceanography
Holography
Acoustics
*ACOUSTIC ARRAYS
*TOMOGRAPHY
*UNDERWATER ACOUSTICS
*MULTIPATH TRANSMISSION
*OCEAN ENVIRONMENTS
VELOCITY
INPUT
ENVIRONMENTS
STRUCTURES
ARRAYS
OCEANS
BOTTOM LOSS
OMNIDIRECTIONAL
OCEANOGRAPHY
PLANE WAVES
BOTTOM
BARENTS SEA
ARRIVAL
HYDROPHONES
LOSSES
SOUND
SURFACES
SIGNALS
RECEIVERS
BEAM FORMING
Barents Sea
Online Access:http://www.dtic.mil/docs/citations/ADA256723
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA256723
Description
Summary:In support of the Barents Sea Polar Front Experiment (BSPFEX) in September 1992 (Barents Sea Polar Front Group, 1992), the planned 224 Hz tomography signal transmissions from a near bottom sound source to a vertical receiver array consisting of 16 hydrophones were simulated. Acoustic rays were traced to the receiver array at a range of 50 km using the NOAA Hamiltonian Raytracing Program for the Ocean (HARPO). Input to HARPO was a mathematical ocean environment based on historical bathymetric and sound speed data. Acoustic multipath arrival structure was constructed through eigenray searches and estimation of raytube spreading and surface and bottom losses. A resolvability analysis of the simulated arrival structure reveals that there are a total of 49 unique resolvable ray arrivals. Among them; 42 are from individual omnidirectional hydrophones and 7 from plane wave beamforming. Acoustic Tomography, Ocean Acoustics, Oceanography, Barents Sea.

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