Preliminary Instruction Book for Sonar Receiver R404(XB-1)/UQ

Abstract

Officially referred to as the Sonar Receiver R404(XB-1)/UQ (Range Rate Indicator), the instrument for the purposes of this Instruction Book will be called the "Graphic Indicator," (G. I.). It exploits the facts that the brain through the eye uses pattern and motion for perception. The sonar signal and noise background are presented simultaneously to the eye on a cathode-ray tube. Since it forms a sensible pattern in the random or contrasting background, the signal is perceptible as order in disorder.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 08, 1953
Accession Number
AD1219754

Entities

People

  • Kingsley Thompson

Organizations

  • United States Naval Research Laboratory

Tags

Readers

  • Human-Computer Interaction (HCI).
  • Military History of the United States in the 20th Century.
  • Radio communications and signal processing.