Abstract
Delays due to bad weather have become common in recent years.When the delay occurs, in most cases, flights will choose ground-holding which results in the waste of airspace resources and reduces the operating efficiency of the entire air route network. In order to deepen the reform of the ATC operations, local rerouting strategy before flight is imperative. In this paper, based on the influence degree and scope of severe weather, historical meteorological data and flight plan data, the damage situation of the air route is comprehensively analyzed, and the segment that pilots need to avoid in route selection is defined. Taking the priority of different city pairs into consideration, the OD pair allocation order model based on AHP (analytic hierarchy process) was established. In addition, this paper establishes the evaluation index of navigation modification combined with the actual operation, and makes a comparative analysis with an example.
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