Shallow Water MCM and ASW Using Off-Board, Autonomous Sensor Networks and Multistatic, Time-Reversal Acoustics

Abstract

This program couples high accuracy acoustic modeling and visualization with customized AUV technology. The sonar sensing uses the bi-static and multi-static Synthetic Aperture created by the network, in combination with medium frequency (4-24 kHz) wide-beam insonification to provide coverage, bottom penetration and location resolution for concurrent detection, localization and classification of proud and buried targets in SW and VSW. The signal processing effort in SWAMSI is therefore centered around generalizing SAS processing to bi-static and multi-static configurations, including bi-static generalizations of auto-focusing and track-before-detect (TBD) algorithms. Another issue concerns the stability and coherence of surface and seabed multiples and their potential use in advanced medium-frequency sonar concepts.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2005
Accession Number
ADA572440

Entities

People

  • David Battle
  • Henrik Schmidt

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Acoustics
  • Autonomous Underwater Vehicles
  • Computer Programs
  • Detection
  • Detectors
  • Frequency
  • Medium Frequency
  • Multistatic Sonar
  • Navigation
  • Networks
  • Physics
  • Sensor Networks
  • Shallow Water
  • Teamwork
  • Three Dimensional
  • Vehicles
  • Water

Readers

  • Acoustical Oceanography.
  • Sensor Fusion and Tracking Systems.