Future GNSS Architecture: Interoperability or Compatibility Between Systems What is the Prudent Course to Pursue

Joseph P. Lortie Jr.

Abstract:	The Global Navigation Satellite System (GNSS) concept was founded on the principle of a seamless global architecture using the latest information technology, satellite navigation systems. Since the early 1990s, this has continued to be a singular goal for many around the world who envision an architecture that will satisfy a myriad of global infrastructure needs. Today, the Global Positioning System (GPS) is the centerpiece to this global concept. However, the emergence of GALILEO as a reality will provide the first true test to this principle by the global community. The first question that must be addressed by the United States and the European Union is will these systems be interoperable or compatible? Interoperable does not necessarily mean compatible and vice versa. Embedded in the development and implementation of this concept are a myriad of political, technical, and operational constraints that should be considered from the outset. This paper will focus on the key constraints from both the civil and military perspectives while attempting to structure a rational way of resolving the many conflicting dynamics that are contained within the critical issues.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	1332 - 1339
Cite this article:	Lortie, Joseph P., Jr., "Future GNSS Architecture: Interoperability or Compatibility Between Systems What is the Prudent Course to Pursue," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 1332-1339.
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