Abstract:

The navigation station selection is a major aspect of the area navigation(RNAV) in en-route phase of flight. The common problems are the frequent station switching and the navigation station hopping in RNAV station selection. Actual navigation performance(ANP) calculation is presented by the distance measure equipment(DME)/DME navigation way, and a DME station selection algorithm is designed by setting the ANP threshold combining with the least ANP in en-route phase of flight. Some simulation experiments are performed using the data about Beijing-Shanghai route and its surrounding DME stations. The results show that the station selection algorithm meets the requirements of navigation accuracy while effectively avoiding the frequent station switching and the navigation station hopping.