Rerouting strategy research based on improved ant colony algorithm

Flight rerouting is an important strategy in the airspace with the limit of heavy weather and flight conflict. First, the grid method was utilized to build the model for diverting airspace environment based on numerical weather prediction features in severe weather. In considering the air traffic rules and aircraft performance, a new rerouting path planning method based on the improved ant colony algorithm was proposed under the limitation of changing times of heading, turning angels and flying distance. Finally, the flight path of Guiyang-Changsha was studied. Simulation results show that the proposed method can search a safe and feasible temporary flight rerouting path between the local flow constrained area and others, and improves the utilization rate of the airspace effectively.