Accession Number:

ADA256723

Title:

Simulation of Acoustic Multipath Arrival Structure in the Barents Sea

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1992-06-01

Pagination or Media Count:

110.0

Abstract:

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.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Holography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE