Abstract:

With continually rapid growth of flight flow and increasing shortage of civil aviation airspace,effective detection of latent aircraft conflicts becomes the key to avoid aircrafts‘dangerous approach or collision occurrence. By establishing reasonable model around aircraft zone,a deterministic conflict detection algorithm is presented based on automatic dependent surveillance-broadcast(ADS-B),which first eliminates threatening aircraft,then detects aircraft conflict in horizontal and vertical directions respectively by making full use of the information such as longitude,latitude,velocity and heading of aircraft provided by ADS-B message and the ADS-B message characteristics including high-speed update rate. Matlab simulation is carried out about this detection algorithm,results show that this algorithm can remove no-threatening aircraft effectively,and timely warning can be given for threatening aircraft. This algorithm has positive significance to guarantee flight safety for free flight.

Key words: ADS-B, conflict detection, free flight