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The SBAS Integrity Concept Standardised by ICAO: Application to EGNOS
| EGNOS | |
|---|---|
| Title | The SBAS Integrity Concept Standardised by ICAO: Application to EGNOS |
| Author(s) | Benoit Roturier, DGAC/STNA, France; Eric Chatre GSA, GNSS Supervisory Authority, Brussels, Belgium and Javier Ventura-Traveset, ESA, European Space Agency. |
| Level | Medium |
| Year of Publication | 2006 |
Abstract
There have been a lot of debates, within the International Civil Aviation Organisation (ICAO) GNSS Panel (GNSSP) group of experts[1], on the proper way to ensure SBAS user safety while at the same time respecting the high availability requirement. The group finally validated a method at the GNSSP Seattle meeting in June 2000 which is reproduced in the GNSS Standards And Recommended Practices (SARPs), published in November 2002[2] [1]. Although the technical relevant information for a SBAS system designer to implement the SBAS integrity concept is fully described in the SARPs, only the strict necessary information is reported there, and it is quite difficult to a non specialist to properly understand this important concept. Since the SBAS integrity concept is quite specific and new, some kind of complementary information to the SARPs was felt desirable. This is the main motivation of this paper, which will also illustrate how the integrity is being managed through the European EGNOS SBAS project.
References
[1] ICAO Amendment 77, Annex 10 to the Convention on International Civil Aviation, Aeronautical Telecommunications: International Standards and Recommended Practices, Volume 1, Radio Navigation Aids, November 2002.
[2] ICAO AWOP/15 Report, 15th meeting, Montreal 26 September- 12 October 1994.
[3] ICAO AWOP/16 Report, 16th meeting, Montreal 23 June- 4 July 1997.
[4] Liu Fan, “Analysis of Integrity Monitoring for The Local Area Augmentation System Using The GNSS”, PhD. Report, Ohio University, August 1998.
[5] RTCA, “Minimum Operational Performance Standards for Global Positioning System/Wide Area Augmentation System Airborne Equipment”, RTCA-DO 229 C, November 2001.
[6] Bruce DeCleene, “Defining Pseudo Range Integrity – Overbounding” ION Conference, September 2000.
[7] M. Tossaint, J. Samson, F. Toran, J. Ventura-Traveset, A Tadjine, I. Delgado, “The Stanford – ESA Integrity Diagram: Focusing on SBAS Integrity,” Part 1 of this book.