Architecting GPS Modernization

L. Jocic, R. DiEsposti, C. Kastenholz, J. Kayloe

Abstract:	This paper describes interim results of the recent study of future architectural opportunities for the Global Positioning System (GPS). The architecting study focused on the development of architecture alternatives to satisfy near-term system requirements and user’s far-term visions about position, velocity, and time-determination needs. A two-prong architectural process, i.e. architecting, was employed to identify near-term and far-term architecture building blocks. The bottom-up architecting focuses on GPS IIF signal modifications to satisfy near-term civil aviation and military signal protection requirements. The top-down architecting identifies far-term architecture building blocks by correlating the end-user vision of needed capabilities with available technologies and system concepts. The two-prong architecting yielded the following building blocks: GPS IIF baseline, modifications of civil and military signal-in-space, differential augmentations, pseudolite augmentations, and integrated navigation and communication in theater of military operations. This paper describes the building blocks, but leaves the definition of an optimal navigation architecture to future quantitative design, cost, and operational effectiveness studies and demonstrations.
Published in:	Proceedings of the 1998 National Technical Meeting of The Institute of Navigation January 21 - 23, 1998 Westin Long Beach Hotel Long Beach, CA
Pages:	363 - 370
Cite this article:	Jocic, L., DiEsposti, R., Kastenholz, C., Kayloe, J., "Architecting GPS Modernization," Proceedings of the 1998 National Technical Meeting of The Institute of Navigation, Long Beach, CA, January 1998, pp. 363-370.
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