Expanded Intercom Multiplex Study.
Abstract
Means of utilizing multiplexing technology in the interior communication systems of large military aircraft were studied. Candidate system approaches included: Time division multiplexing (TDM) of digitized audio samples onto a common distribution cable to subscriber stations; frequency division multiplexing (FDM) of audio onto a common distribution cable in a phase synchronous single sideband suppressed carrier (SSBSC) system; and digital TDM control of a centralized switching matrix which performs all audio switching and mixing as in the AN/AIC-27 airborne interphone system. These approaches were compared using the audio distribution system of the Airborne Warning and Control System (AWACS) as a model requirements set. The AN/AIC-27 approach was found to be clearly superior because of its low complexity and its ability to provide secure communications. A system for the AWACS requirements utilizing this approach was configured in detail and is described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1974
- Accession Number
- AD0920281
Entities
People
- Norman W. Schaefler
- Richard L. Julian
- Thomas J. Kosco
Organizations
- Hughes Aircraft Company