System for Active Underwater Imaging Using Inverse Synthetic Aperture.

Abstract

This invention relates to an underwater acoustic imaging system for use in controlled environments such as acoustic test facilities. More specifically it employs a single fixed hydrophone receiver location and a rotated target to greatly reduce the amount of acquisition hardware required and can satisfy the fractional wavelength phase coherence requirements for imaging. Since the same test setup, and in many cases even the identical data set, can be used for other test purposes such as target strength measurements, the images cn be used to help locate major contributors to target strength, and to indicate the position of the object relative to the data set used for the target strength measurements. Keywords: Patent applications, Acoustic reflection, Hydrophones. (KR)

Document Details

Document Type
Technical Report
Publication Date
Jul 05, 1990
Accession Number
ADD014652

Entities

People

  • Maurice Griffin

Organizations

  • United States Department of the Navy

Tags

DTIC Thesaurus Topics

  • Acoustic Reflection
  • Acquisition
  • Buildings And Structures
  • Controlled Environment
  • Data Sets
  • Environment
  • Hydrophones
  • Inventions
  • Measurement
  • Patent Applications
  • Patents
  • Target Strength
  • Targets
  • Test Facilities

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Medical Imaging.