Determining the Characteristics and Mechanisms for Biological Clutter and Environmental Reverberation and their Impact on Long Range Sonar Performance in Range-Dependent Fluctuating Ocean Waveguides

Abstract

Determine the temporal and spatial characteristics, and physical mechanisms for biological clutter and environmental reverberation in long-range wide area active sonar systems. This understanding is used to develop operational and signal processing techniques to distinguish biological clutter from scattered returns due to man-man targets, and to determine the limits placed by environmental reverberation on target detection. In the second area, the statistical properties of broadband acoustic signals transmitted and scattered in range-dependent ocean waveguides is examined. This knowledge is then used to determine the extent to which environmental variabilities limit our ability to perform target localization and parameter estimation through beamforming and match-filtering broadband data from active sonars in fluctuating and dispersive ocean waveguides.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2007
Accession Number
ADA569078

Entities

People

  • Purnima Ratilal

Organizations

  • Northeastern University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Acoustic Signals
  • Acoustics
  • Active Sonar
  • Broadband
  • Continental Shelves
  • Detection
  • Fish
  • Frequency
  • New Jersey
  • Reverberation
  • Scattering
  • Seabed
  • Signal Processing
  • Sonar
  • Target Detection
  • Waveguides

Readers

  • Acoustical Oceanography.