Automatic Dependent Surveillance Capacity of a Geostationary Satellite System in the U.S. Domestic Airspace

Curtis A. Shively

Abstract:	In satellite-based Automatic Dependent Surveillance (ADS), an aircraft’s position derived by an on-board navigation system is relayed via satellite to air traffic control (ATC) systems on the ground. Standards are being developed by the International Civil Aviation Organization (ICAO) for an Aeronautical Mobile-Satellite Service (AMSS) which would include ADS. The AMSS satellite link is being designed to be a subnetwork of the Aeronautical Telecommunications Network (ATN). A satellite communications system that could provide AMSS ADS in the U.S. domestic airspace is being constructed by the American Mobile Satellite Corporation (AMSC). This paper describes a preliminary analysis of the AMSC first generation system capacity (number of aircraft) for AMSS ADS in the early part of the 21st century. Capacity is related to the required spectral bandwidth as a function of: 1) ADS update interval, 2) communications scheme, 3) spectral efficiencies of different modulation techniques, and 4) the amount of overhead associated with the ATN.
Published in:	Proceedings of the 1992 National Technical Meeting of The Institute of Navigation January 27 - 29, 1992 Catamaran Resort Hotel San Diego, CA
Pages:	215 - 222
Cite this article:	Shively, Curtis A., "Automatic Dependent Surveillance Capacity of a Geostationary Satellite System in the U.S. Domestic Airspace," Proceedings of the 1992 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 1992, pp. 215-222.
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