Accession Number:

ADA605559

Title:

Seabed Geoacoustic Planning Support for the QPE Uncertainty DRI

Descriptive Note:

Corporate Author:

PENNSYLVANIA STATE UNIV STATE COLLEGE APPLIED RESEARCH LAB

Personal Author(s):

Report Date:

2007-09-30

Pagination or Media Count:

4.0

Abstract:

LONG TERM GOALS. Develop capability for quantifying, predicting and exploiting QPE the impact of seabed uncertainty on sonar system performance. OBJECTIVES. The objectives were to contribute to the development of a science plan for the QPE DRI that builds on the recent advances in the understanding of uncertainty. APPROACH. Assisted in shaping science plan drawing on the open literature, Taiwanese and other QPE colleagues, in close collaboration with members of the Seabed Characterization Working Group including Larry Mayer and Brian Calder University of New Hampshire, Jim Lynch WHOI, Bob Miyamoto APLUW as well as Phil Abbot team leader for Acoustics Working Group. WORK COMPLETED. 1 Helped identifyobtain in southern East China Sea, pertinent to DRI goals key results from geologicgeophysicalgeoacoustic community key missing elements of seabed characterization methods for quantifying and predicting geoacoustic uncertainty 2 Provided guidance on seabed uncertainty and variability issues in order to develop goals and a roadmap for the ensuing 4-year DRI. RESULTS. Unknown acoustic boundary conditions at the seabed lead to large uncertainties in TL and noise predictions. Spatial and possibly temporal see features discussed below variability will increase those uncertainties. A literature search was performed to identify seabed processes and features that might play a significant role in acoustic performance uncertainty. A short summary follows.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE