Accession Number:

ADA629983

Title:

Ocean Acoustic Propagation: Fluctuations and Coherence in Dynamically Active Shallow-Water Regions

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH WOODS HOLE MA DEPT OF APPLIED OCEAN PHYSICS AND ENGINEERING

Personal Author(s):

Report Date:

2006-09-30

Pagination or Media Count:

9.0

Abstract:

LONG TERM GOALS. The goals are to understand the nature and causes of acoustic signal fluctuations in the shallow water environment. This will allow prediction of acoustic system performance and exploitation of acoustic signal properties. Here, signal means any identifiable acoustic reception, including noise of unknown origin, identified signals, and intentional signals. OBJECTIVES. An objective is to probe deeper into an acoustic transmission data set from past continental shelf-edge shallow water experiment to better define signal stability and fluctuation in terms of multiple parameters. Such parameters are, for example, intensity variance of randomly chosen multipath amplitudes, variance of peak intensity selected from multipath interference patterns, and decorrelation time scales of each of these. Both established and newer parameters related to signal variability will be employed. Another objective is to gain theoretical understanding of the fluctuation behavior.

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE