This work is supported by the National Basic Research Program of China (No.2011CB707000), Foundation for Innovative Research Groups of the National Natural Science Foundation of China (No.60921001), National Science Foundation for Distinguished Young Scholars of China (No.60625102).
The optimization of national Air route network (ARN) has become an effective method to improve the safety and efficiency of air transportation. The Crossing waypoints location (CWL) problem is a crucial problem in...