Volume 4, Number 3, September 2013 Journal of Convergence Ground Speed Calculation Using Wind Component Information for Trajectory Prediction 1 1 1 Yong-Kyun Kim , Deok Gyu Lee †, Jong Wook Han Hyodal Park2 1 Electronics & Telecommunications Research Institute 2 Electronic and Electrical Engineering, Inha University, Software Research Laboratory Dept. of Cyber Security #100, Inharo, Nam-gu, Incheon, Rep. of Korea Daejeon, Rep. of Korea
[email protected] {Ykkim1, deokgyulee, hanjw}@etri.re.kr ` Abstract—Ground speed calculation is basic work for trajectory an arrival airport. The following simplifications are made. The prediction, conflict detection and air traffic flow management. airspace is considered as an Euclidean space, where all airports This paper proposes a novel algorithm based on Vincenty’s formulas for ground speed calculation. Our experiments used are at altitude 0. Latitudes and longitudes on the ellipsoidal simulations with wind components and our experimental results Earth’s surface are converted into (x, y) coordinates by a show that our ground speed calculation exhibits much better stereographic projection, and the altitude in feet shall be our z accuracy performance. coordinate [5]. Keywords—Ground speed, True Airspeed, Trajectory Prediction, ATFM I. INTRODUCTION The air traffic control (ATC) system improves the safety and efficiency of air traffic by preventing collisions against other aircraft and obstacles and managing an aircraft’s navigation status [1]. Air traffic demand is expected to more Fig. 1. Basic design of trajectory than double over the next 20 years [2]. The accuracy of trajectory predictions in en-route airspace impacts ATM All aircraft fly with identical performances and follow linear conflict predictions and estimated times of arrival (ETA) to slopes of climb and descent.