Research Of The Airspace En Route Network Based On The Bi-level Programming

En-route network planning is a decision-making process that the forecast to be the premise, and based on the assessment, obeying the general steps of planning. The en-route network planning results directly impact the air traffic safety and efficiency. The research of the en-route network is a pioneering and an important research topic of air traffic management area. In this paper, we come to the in-depth study of the general steps of the en-route network planning from theoretical and practical aspects: Forecast-Assessment-Planning.Firstly, introducing the BP neural network forecasting ,and in conjunction with the specific circumstances of the air traffic ,then giving the general methods and steps of the flight flow projections; On this basis, theoretically assessing the en-route network capacity to the leg and cross-points on the different situations, and reaching a ultimate theoretical assessment model of the en-route network capacity. Followed the above-mentioned basis, proposing the en-route network planning method based on the bi-level planning, building the discrete bi-level en-route network planning model in line with the actual situation for the discrete en-route network. Finally using the genetic algorithm which has the advantages as follows: good performance of searching the overall, parallel and robustness, to solve the bi-level model. The simple example is to verify the above theory, and the results show that our theory is reasonable. Finally, summarizing the harvest of the paper and putting forward the en-route network planning and related issues.