Underwater Threat Neutralization: Swimmer Defense

Abstract

The long term goal of this project is to demonstrate the efficacy of a swimmer deterrent system that focuses high intensity, low frequency sound at a sector of a harbor containing a swimmer. The system integrates swimmer location data from high frequency sonar detectors with control templates to drive a multiplicity of sound sources. Focusing is achieved by driving each of the sound sources with optimal magnitude and phase based on measured transfer functions between source and harbor sectors. These measurements are obtained from the acoustic calibration of the harbor.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2008
Accession Number
ADA533143

Entities

People

  • Chris Rahn
  • Gary Koopmann

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustics
  • Boundaries
  • Calibration
  • Control Systems
  • Detectors
  • Experimental Data
  • Frequency
  • Graphical User Interface
  • Hydrophones
  • Intensity
  • Measurement
  • Sine Waves
  • Sound Pressure
  • Template Patterns
  • Transfer Functions
  • Transmission Loss
  • User Interface

Readers

  • Acoustical Oceanography.
  • Systems Analysis and Design