QM/PSK Voice/Data Modem.

Abstract

Two Quadrature Modulation/Phase Shift Keyed (QM/PSK) Voice/Data Modem systems have been developed as part of the satellite communications hardware for advanced air traffic control systems. These systems consist of a modulator and demodulator unit which provides for the one-way communication of voice and/or data signals. The modulator and demodulator unit provides simultaneous transmission of analog voice and digital data signals multiplexed on a single carrier, using quadrature modulation techniques. The modem interfaces with the transmitter/receiver at 70 MHz intermediate frequency. The report contains design theory, circuit descriptions, diagrams, calibration procedures, and laboratory test results. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1976
Accession Number
ADA024841

Entities

People

  • J. Mcchesney
  • T. Lerner

Organizations

  • Bell Aircraft Corporation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Traffic
  • Air Traffic Control Systems
  • Artificial Satellites
  • Control Systems
  • Demodulators
  • Digital Data
  • Frequency
  • Intermediate Frequencies
  • Laboratory Tests
  • Modulation
  • Modulators
  • Phase Shift
  • Radar Landing Control
  • Satellite Communications

Readers

  • Computer Engineering
  • Radar Systems Engineering.

Technology Areas

  • Space