NPS High Resolution Synthetic Aperture Sonar.

Abstract

This thesis investigated the use of synthetic aperture techniques to achieve a long effective aperture, high resolution, imaging sonar. The approach included a full simulation of the system using the MATLAB programming environment that provided a model for developing six data processing algorithms and a working 25KHz, 1 m baseline, air medium synthetic aperture sonar. The six azimuthal processing techniques included: (1) a normal, real aperture, (2) an unfocussed synthetic aperture, (3) a hybrid focussed-unfocussed system, (4) a fully focussed one line algorithm, (5) a limited two-dimensional, fully focussed algorithm and, (6) a limited two-dimensional, hybrid focussed-unfocussed algorithm. This thesis compared the run times, resolutions and signal to noise ratios achieved by the six techniques both in simulation and experimental measurements collected with the actual prototype.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1995
Accession Number
ADA306558

Entities

People

  • Joseph D. Welter

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Computer Programming
  • Data Processing
  • Environment
  • High Resolution
  • Measurement
  • Models
  • Prototypes
  • Simulations
  • Sonar
  • Synthetic Aperture Sonar
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Radar Systems Engineering.