Programmable PCM (Pulse Code Modulation) Encoder.

Abstract

The modulation methods for the transmission of data from sounding rockets and high altitude balloons has gradually progressed from FM/FM to almost exclusively pulse code modulation (PMC) over the last 20 years. This due in part to the more flexible formatting, increased overall accuracy capability and efficient transmission and recording of the PCM signals. As a direct consequence of this flexibility in formatting, a particular PCM encoding system can be closely matched to specific experimental requirements to give the desired accuracy, frequency response, and number of channels while still conserving transmission bandwidth. The PCM encoder system presented in this paper provides a method of selecting the operational parameters by stored program without any hardware changes. Keywords: microcomputers; multiplexers.

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Document Details

Document Type
Technical Report
Publication Date
Jan 16, 1985
Accession Number
ADA181533

Entities

People

  • Norman C. Poirier
  • Thomas P. Wheeler

Organizations

  • Northeastern University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Analog Signals
  • Circuits
  • Clocks
  • Computer Programming
  • Converters
  • Detectors
  • Diagrams
  • Digital Data
  • Digital Information
  • Firmware
  • Logic
  • Modulation
  • Oscillators
  • Pulse Code Modulation
  • United States

Fields of Study

  • Engineering

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Radio communications and signal processing.
  • Space/Atmospheric Physics.