Evaluation of DME/DME Integration as APNT for I.R. IRAN

International Civil Aviation Organization (ICAO) has proposed alternative solutions for cases when Global Navigation Satellite Systems (GNSS) is blocked. Among them, DME/DME has features that make it as a good and cost-effective option. In this paper, DME/DME navigation is implemented based on Extended Kalman Filter (EKF) and its performance and accuracy from the APNT perspective has been investigated in a real aerial route based on current operable DME network in I.R. IRAN. These investigations show that the integrated aerial navigation via DME/DME cover the specified APNT requirements and their proper dispersal provides the required coverage according to RNAV/RNP requirements.