Multi-objectives Optimization on Flights Landing Sequence at Busy Airport

The optimized landing sequence of fight is one of the good methods to decrease delay and improve service. Especially, the objectives are usually conflicting and contradictive when the air traffic controller (ATC) makes the decision. The landing sequence at the busy airports can be regarded as one machine scheduling problem with multi-objectives in the paper, and the pareto optimization is discussed emphatically. The mathematic model is formulated which makes the tradeoff between the number of weighted delayed flights and the maximum time of the delayed flight, and then flexibly choose solutions. The multi-objective ant colony algorithm which shares the pheromone between multi-objectives is utilized to solve the problem. Results show that the proposed algorithm performs well when compared with the traditional heuristic methods and can help ATC choosing different landing sequences according to the real conditions.