Accession Number:

ADA056830

Title:

Performance Results of Some Candidate French Modems for the Aeronautical Satellite Communication Channel.

Descriptive Note:

Interim rept. Jul 76-Apr 77,

Corporate Author:

TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MASS

Personal Author(s):

• Duncombe,C. B.

Report Date:

1978-05-01

Pagination or Media Count:

75.0

Abstract:

Five candidate data, voice, and ranging modems were evaluated by the AEROSAT channel simulation facility to determine applicability for use in the aeronautical satellite communication channel for air traffic control. The modems were supplied by Telecommunications Radio-electriques et Telephoniques of Paris, France. The modems performance were evaluated as a function of carrier to noise ratio, carrier to multipath ratio, doppler frequency, and relative doppler frequency. The results are presented herein. Author

Descriptors:

• *AIR TRAFFIC CONTROL SYSTEMS
• *MODEMS
• *COMMUNICATION SATELLITES
• FOREIGN TECHNOLOGY
• DATA TRANSMISSION SYSTEMS
• SIGNAL TO NOISE RATIO
• CODING
• FRANCE
• RANGE FINDING
• MULTIPATH TRANSMISSION
• VOICE COMMUNICATIONS
• DOPPLER EFFECT
• CARRIER WAVES

Subject Categories:

• Terminal Flight Facilities
• Unmanned Spacecraft
• Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE