Accession Number : AD0782256

Title :   System Access Control Study.

Descriptive Note : Final rept. Jan 73-Jan 74,


Personal Author(s) : Shub,L. ; Allen,D. ; Clune,E. ; Lerner,T.

Report Date : JUN 1974

Pagination or Media Count : 317

Abstract : The report presents a summary of a study conducted for the Transportation Systems Center of promising access control techniques which are applicable to an aeronautical satellite system. Several frequency division multiple access (FDMA) and time division multiple access (TDMA) configurations are analyzed and compared which are capable of providing voice, data and independent surveillance services. One of the FDMA concepts and a burst TDMA system are rated highest and are presented in greatest detail. Procedures are outlined for different types of entry, beam switching and handling various types of interconnections. Included are preliminary designs of the avionics instrumentation. (Author)

Descriptors :   *Navigation satellites, *Air traffic control systems, *Multiple access, Avionics, Multiplexing, Data links, Communication satellites, Instrumentation, Computer programming

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE