AIRCRAFT L-BAND BALLOON - SIMULATED SATELLITE EXPERIMENTS VOLUME I. EXPERIMENT DESCRIPTION AND VOICE AND DATA MODEM TEST RESULTS

This report details the result of an experiment performed by the Transportation Systems Center of the Department of Transportation to evaluate candidate voice and data modulation systems for use in an L-Band Air Traffic Control System. The experiment was designed to evaluate performance in the presence of oceanic multipath, using a high altitude balloon carrying an L-Band transponder as a geostationary satellite simulator. The voice modems chosen were Delta Modulation, Pulse Duration Modulation and Adaptive Narrow-Band Frequency Modulation. The data modems used employed PSK modulation with coherent demodulation. This is Volume I of a two-volume report. Volume II 'CW Multipath Test Results and Analyses, 'FAA-RD-73-173, details the portion of the data dealing exclusively with the measurement of oceanic multipath. (Author)

• Supplemental Notes:
  • See also Volume 2, AD-A005 649.
• Corporate Authors:

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142

  Federal Aviation Administration

  Systems R&D Service, 800 Independence Avenue, SW
  Washington, DC  United States 
• Authors:
  • Engels, P D
  • Wilson, R A
• Publication Date: 1975-10

Media Info

• Pagination: 139 p.

Subject/Index Terms

• TRT Terms: Air traffic control; Balloons; Delta functions; Frequency modulation; L band; Modems; Multipath transmission; Pulse duration modulation; Radio waves; Satellite communication; Speech; Transponders; Voice communication
• Old TRIS Terms: Air to space; Continuous waves; Delta modulation
• Subject Areas: Aviation; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 00093413
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TSC-FAA-74-24 Final Rpt., FAA-RD-75-174
• Files: NTIS, USDOT
• Created Date: Dec 29 1976 12:00AM