ANALYSIS OF AFSK-QFM TEST DATA.

Abstract

Ground-to-air transmissions are superior to airto-ground transmissions for both quenching frequency modulation (QFM) and automatic frequency shift keyers (AFSK) and for both equipments AN/ARC-65 and AN/ARC-58. Using 95% readability as a criterion, the composite results indicate that QFM percent of message readability is 79% for ground-to-air compared to 68% for air-toground. The AFSK percent message readability is 60% for ground-to-air and 45% for air-to-ground. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 24, 1962
Accession Number
AD0430584

Tags

DTIC Thesaurus Topics

  • Aeronautics
  • Automatic
  • Composite Materials
  • Frequency
  • Frequency Modulation
  • Frequency Shift
  • Frequency Shift Keyers
  • Modulation

Readers

  • Radio communications and signal processing.