AN UNDERWATER SOUND SYSTEM USED FOR ACCURATE POSITIONING.

Abstract

A small battery-driven transponder was developed from an Edgerton pinger, a hydrophone, and an amplifier. The transponder was used in the Charles River. It was demonstrated that distances from the transponder could be determined to within 2.7 feet. The maximum distance recorded was 1200 feet. As further application of the transponder, it was decided to attempt to run a search pattern of a series of concentric circles with the transponder at the center. Due to difficulties in equipment other than the transponder, it proved difficult to cruise in such a circle. With the transducer looking at the bottom, the transponder ceased to run in sync at distances greater than 400 feet. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1966
Accession Number
AD0641393

Entities

People

  • Michael Leo Howard

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Acoustic Equipment
  • Actuators
  • Amplifiers
  • Communication Equipment
  • Electrical Equipment
  • Electroacoustic Transducers
  • Hydrophones
  • Mechanical Equipment
  • Radio Equipment
  • Sonar Equipment
  • Transducers
  • Transponders
  • Underwater Equipment
  • Underwater Sound

Readers

  • Aerospace Test and Evaluation
  • Electrical Engineering
  • Oceanography.