Determining the Location and Shape of a Towed Array Using Low-Frequency Electromagnetic Fields,

Abstract

At the present time, there is only one demonstrated practical method of measuring the position of the hydrophone elements of a long submerged hydrophone array towed by a surface ship. This method is to measure the distance of the hydrophones from an acoustic source remote from both the towed array and the towing ship. The process of deploying a remote acoustic source presents practical difficulties that make this measurement technique difficult and inconvenient for continuous use. In this paper we describe an untried but apparently feasible method that uses electromagnetic fields generated at the towing ship. These electromagnetic fields would be generated by sending a large pulsed current through electrodes suspended in the ocean at equal depth behind the towing ship. The electrodes would be connected by a long straight horizontal insulated conductor broken at its center and antisymetrically fed from a high-current source. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA074568

Entities

People

  • P. W. Jameson

Organizations

  • BBN Technologies

Tags

Communities of Interest

  • Advanced Electronics
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Arrays
  • Coordinate Systems
  • Detectors
  • Electric Fields
  • Electrodes
  • Electromagnetic Fields
  • Frequency
  • Hydrophones
  • Magnetic Detectors
  • Magnetic Fields
  • Measurement
  • Military Research
  • Near Field
  • Orientation (Direction)
  • Radiation
  • Towed Arrays

Readers

  • Acoustical Oceanography.
  • Electrical Engineering
  • Systems Analysis and Design

Technology Areas

  • Microelectronics