GPS and Galileo - Interoperability for Civil Aviation Applications

摘要

GPS provides positioning and timing services worldwide for a wide variety of applications, and for the majority of them the present GPS performance is more than sufficient. The Galileo system currently being defined will provide a universally available service with similar performance to GPS plus different capabilities to satisfy more demanding applications such as civil aviation. Availability of the two systems provides the opportunity to enhance user navigation system key aspects of civil aviation applications as well as develop new ones. Both systems will operate simultaneously, and so it is paramount that they do not interfere with each other. This paper reviews and evaluates the top-level constraints for civil aviation compatibility and interoperability.