Measurement and Elimination of Amplitude and Phase Distortion in Magnetic Tape Duplicating Systems,

Abstract

When duplicate tapes are recorded from previously recorded AN/AQS-13 sonar data, care must be taken to maintain the relative phase and amplitude characteristics of the multiplexed sonar half-beam data. Except for the nonuniform characteristics of the tape and tape recorder flutter, distortion introduced on the duplicate tape will be due to either (or both) nonlinear phase characteristics or nonuniform amplitude characteristics of the 'dubbing' system. The report describes (a) the method used to determine the relative phase response of an unequalized dubbing system, (b) the application of the technique, and (c) the equalization used to eliminate the unwanted distortion from the system. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 05, 1970
Accession Number
AD0875979

Entities

People

  • Jack L. Grubbs

Organizations

  • Naval Ordnance Laboratory

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Distortion
  • Electronic Recording Systems
  • Elimination
  • Equalization
  • Magnetic Tape
  • Measurement
  • Nonuniform
  • Phase
  • Phase Distortion
  • Recording Systems
  • Reproduction (Copying)
  • Tape Recorders
  • Tapes

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Phased Array Antenna Design.