Accession Number:

ADA629634

Title:

Report on Tomographic and Geophysical Inversions from Opportunistic Sound Sources

Descriptive Note:

Corporate Author:

SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB

Personal Author(s):

Report Date:

2003-09-30

Pagination or Media Count:

7.0

Abstract:

The ocean is full of biological and other naturally-generated sound sources that could be used to develop and demonstrate advanced acoustic localization and inversion concepts. Unfortunately, these sources are often located in hostile and isolated environments where deployment of sophisticated array systems is difficult, expensive, and inflexible. A prototype modular array has been built, where each element records data directly to a local flash memory, permitting the elements to be connected by rope instead of cable. This permits the elements to be arranged in various configurations, including towed horizontal arrays, bottom-mounted horizontal arrays, and vertical arrays, both short and wide-aperture. All array deployments are expected to be light enough to be deployed from a small motorboat, and flexible enough to be moved and redeployed multiple times a day. The result would be a compact, rugged, and unobtrusive system that can be used to conduct multi-element array localization and inversion studies on biological and anthropogenic sources of opportunity with minimal field resources and lead time.

Subject Categories:

  • Biology
  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Direction Finding

Distribution Statement:

APPROVED FOR PUBLIC RELEASE