Frequency Domain Beamformer for a 3-D Sediment Volume Imaging Synthetic Aperture Sonar

Abstract

A frequency domain beamforming approach is described for 3-D sediment volume imaging synthetic aperture sonars (SAS). The beamformer, designed for systems with receiver arrays oriented transverse to the vehicle, performs standard delay and sum processing for each ping in the across-track direction followed by multi-ping synthetic aperture processing of elevation planes in the along-track direction. The beamformer can be run repeatedly with varying along-track squint angles revealing aspect-dependent target features. The collection of elevation planes, independently computed by the frequency domain beamformer, can be processed simultaneously on multiple threads of execution to take advantage of multi-CPU machines.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2010
Accession Number
ADA527583

Entities

People

  • Daniel D. Sternlicht
  • Jonathan R. Magoon
  • Matthew A. Nelson

Organizations

  • Naval Surface Warfare Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Coordinate Systems
  • Elevation
  • Frequency
  • Frequency Domain
  • Geometry
  • Grids
  • Navigation
  • Near Field
  • Orientation (Direction)
  • Sediments
  • Sonar
  • Standards
  • Synthetic Aperture Sonar
  • Three Dimensional
  • Time Domain
  • Transverse
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Artificial Intelligence
  • Phased Array Antenna Design.