Design of Synthetic Aperture Sonar Systems for High-Resolution Seabed Imaging (Tutorial Slides)

Abstract

This tutorial reviews the key aspects of the design of synthetic aperture sonar (SAS) systems for high resolution seabed imaging. After a quick overview of the expected benefits and main features of SAS, the design of the transmitter and receiver arrays is discussed, with emphasis on the mitigation of spatial aliasing with multi-element receiver arrays, wideband operation and extension to interferometric SAS for estimating the seabed bathymetry. The most difficult issue in SAS, which is the micronavigation problem, i.e. estimating the unwanted platform motions with the required sub-wavelength accuracy, will be addressed in detail. The emphasis is on methods that have proven their value at sea, which combine inertial navigation systems (INS) with data-driven methods based on the Displaced Phase Centre Antenna (DPCA) technique.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2006
Accession Number
ADA457009

Entities

People

  • Marc Pinto

Organizations

  • Centre for Maritime Research and Experimentation

Tags

Communities of Interest

  • Autonomy
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Autonomous Underwater Vehicles
  • Doppler Effect
  • Errors
  • Far Field
  • Frequency
  • Guidance
  • High Resolution
  • Inertial Navigation
  • Inertial Navigation Systems
  • Navigation
  • Near Field
  • Seabed
  • Side Looking Sonar
  • Sonar
  • Synthetic Aperture Sonar
  • Transmitters
  • Travel Time

Readers

  • Acoustical Oceanography.
  • Database Systems and Applications
  • Phased Array Antenna Design.