What Level of Confidence to Put on Computed Availability Figures for Satellite Navigation System?

Pierre Janniere

Abstract:	The Civil Aviation requirements for the use of a navigation system are very stringent, and especially on the availability. In order to use a satellite navigation system as a sole mean for navigation, a proof of the availability of the system must be shown. Some indications in order to calculate this availability have already been published ([l], [2] and [3]), but less attention has been paid to the variation of the availability calculated, according to the hypothesis for the calculations. These variations are important when dealing with availabilities around 99.99...%, and for future reglementation concerning the certification. This paper points out the different problems arising when computing the navigation service availability and the confidence that can be given to the availability figures.
Published in:	Proceedings of the 51st Annual Meeting of The Institute of Navigation (1995) June 5 - 7, 1995 Antlers Doubletree Hotel Colorado Springs, CO
Pages:	391 - 394
Cite this article:	Janniere, Pierre, "What Level of Confidence to Put on Computed Availability Figures for Satellite Navigation System?," Proceedings of the 51st Annual Meeting of The Institute of Navigation (1995), Colorado Springs, CO, June 1995, pp. 391-394.
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