Flashing Light Encoders

Abstract

transmission of data from sub-orbital vehicles is accomplished primarily through the use of RF telemetry methods. One suggested approach to assure data transmission during a RF blackout employs a supplementary flashing light transmitting system. In this system the flashing light encoder has the assignment of transforming data information imposed on a group of FM sub-carrier channels into a form compatable with a flashing light transmitter. The encoder samples the frequency in X-channels and converts each frequency into a time interval between two flashes. The coincidence of the start of one sample with the termination of the previous sample provides for maximum efficiency in the utilization of time and power. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 27, 1961
Accession Number
AD0269558

Entities

People

  • Lynn A. Jacobson

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Analog Systems
  • Circuits
  • Coders
  • Coding
  • Data Transmission
  • Difference Frequency
  • Frequency
  • Light Transmission
  • Local Oscillators
  • Multichannel
  • Multivibrators
  • Oscillators
  • Square Waves
  • Standards
  • Telemetry
  • Time Intervals
  • Transmitting

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Radio communications and signal processing.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.

Technology Areas

  • Space