Extending Required Navigation Performance to Include Time Based Operations and the Vertical Dimension

摘要

We derived a concept for a four dimensional Required Navigation Performance (RNP) by extending the existing lateral RNP into the vertical and along-track dimensions. The new concept also complies with existing requirements of reduced vertical separation minima and required time of arrival. Based on the desired target safety level and traffic on a given route, the along track requirements are formulated for the traffic using the airway. In the vertical, some accuracy requirements at the 3 sigma level are already specified, however monitoring and alerting is not foreseen. We suggest a monitoring technology based on regionally augmented satellite navigation. The vertical RNP requirement can be fulfilled with a system governed by a zero-mean Gaussian with sigma=16m. The required along- track accuracy depends on the number of aircraft occupying the specific route and their respective speed. Copyright (c) 2016 Institute of Navigation