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Towards a Quantitative Assessment of Benefits INS/GPS Integration Can Offer to Civil Aviation

1990; Wiley; Volume: 37; Issue: 4 Linguagem: Inglês

10.1002/j.2161-4296.1990.tb01560.x

2161-4296

Rolf Johannessen, Michael Asbury,

GNSS positioning and interference

This paper is written to suggest a methodology for assessing the value of particular combinations of INS and GPS, both feeding into a flight management system. The paper considers the complementary nature of GPS and INS sensors and the different levels of integration possible. Those benefits that are of value to civil aviation are then highlighted. The various combinations of INS and GPS sensors are evaluated against a typical transatlantic profile, taking into account certain operational demands and requirements. The paper refers to the distribution of outage durations and compares this with the INS drift rates. Finally, it addresses the quantification of performance in terms of the probability that a particular requirement is not met. It is recognized in the paper that the methodology suggested could be refined. Nevertheless, the methodology is considered to have potential as the basis for comparing different airborne equipment configurations, and also for identifying the extent to which a particular configuration can meet the requirements for sole means as well as supplemental means navigation.