Safety of Life Considerations for GPS Modernization Architectures

Gary McGraw and Tim Murphy

Abstract:	There are important on-going activities to develop modernized Global Navigation Satellite Systems (GNSS). The GPS Joint Program Office is currently conducting an Architectural Trade Study to develop requirements and system architectures for the next generation of GPS, a.k.a. GPS-III. The European Union (EU) and European Space Agency (ESA) are developing the Galileo system. The needs of civil GPS applications, especially those with safety of life concerns like aviation, are driving many of the architectural innovations being considered for GPS and Galileo. There are number of key underlying assumptions being made by the civil community in its use of GPS for high integrity applications and in the deployment of augmentations that may not be widely recognized. Many of these GPS applications will be in service long before modernized GNSS are deployed and may continue to exist after deployment of these systems. Future GNSS architectures (and near-term GPS modernization with Blocks IIR-M and IIF) need to consider these civil assumptions to preserve the investments being made for augmentation systems and GPS equipment.
Published in:	Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001) September 11 - 14, 2001 Salt Palace Convention Center Salt Lake City, UT
Pages:	632 - 640
Cite this article:	McGraw, Gary, Murphy, Tim, "Safety of Life Considerations for GPS Modernization Architectures," Proceedings of the 14th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2001), Salt Lake City, UT, September 2001, pp. 632-640.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In