Safety Arguments for Next Generation, Location Aware Computing

Concerns over accuracy, availability, integrity, and continuity have limited the integration of Global Positioning System (GPS) and Global Navigation Satellite System (GLONASS) for safety-critical applications. More recent augmentation systems, such as the European Geostationary Navigation Overlay Service (EGNOS) and the North American Wide Area Augmentation System (WAAS) have begun to address these concerns. Augmentation architectures build on the existing GPS/GLONASS infrastructures to support location based services in Safety of Life (SoL) applications. Much of the technical development has been directed by air traffic management requirements, in anticipation of the more extensive support to be offered by GPS III and Galileo. WAAS has already been approved to provide vertical guidance for aviation applications. During the next twelve months, the full certification of EGNOS for SoL applications is expected. This paper discusses similarities and differences between the safety assessment techniques used in Europe and North America.

• Record URL:
  https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100036829.pdf
• 
• Corporate Authors:

  National Aeronautics and Space Administration

  Langley Research Center
  Hampton, VA  United States  23681
• Authors:
  • Johnson, C W
  • Holloway, C M
• Conference:
  • 5th IET International System Safety Conference
  • Location: Machester , United Kingdom
  • Date: 2010-10-18 to 2010-10-20
• Publication Date: 2010-10

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: 6p

Subject/Index Terms

• TRT Terms: Air traffic control; Decision support systems; Global Positioning System; Risk assessment
• Identifier Terms: Global Navigation Satellite System; Next Generation Air Transportation System; Wide Area Augmentation System
• Uncontrolled Terms: Safety assessment
• Subject Areas: Aviation; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01333004
• Record Type: Publication
• Report/Paper Numbers: NF1676L-10960
• Files: TRIS
• Created Date: Mar 21 2011 2:13PM