Research On Airport Clearance Problem Based On Multi-Runway Automatic Modeling

Since the "14th Five-Year Plan",the air logistics industry has been in a period of professional development,but the digital level of clearance management work is low.The airport clearance analysis workflow is complex and the accuracy is low,moreover the research on the clearance of multi-runway airports is insufficient,which is not conducive to the construction plan of China’s civil aviation type IV airports and hinders the development of the air logistics industry.Aiming at the above problems,this paper studies the:construction method of multi-runway airport clearance model,derives its analytical formula,and improves the efficiency and accuracy of the ultra-high assessment of buildings in the airport clearance area.A more accurate model of airport clearance limit surface is constructed to improve the level and accuracy of digitization of airport clearance management,simplify the workflow of airport clearance analysis,and improve the computational efficiency and versatility of the evaluation method.Firstly,with reference to the idea of mixed representation(Boundary representation+Constructive Solid Geometry)in the solid modeling method,the multirunway airport clearance model is unitized and decomposed,and it is understood as the final model obtained by multiple single-runway airport headroom models after a series of Boolean operations.According to the idea of parametric modeling,based on the specific parameters of all runways in the airport,the mathematical model of the single-runway airport clearance surface is established,considering the influence of the runway longitudinal slope and airport level on the obstacle restriction surface,the plane limit range of each restricted surface is calculated,and then on the basis of the airport clearance surface mathematical model,the corresponding single-runway clearance elevation model is constructed,and then the single-runway airport clearance model is integrated into the multirunway airport clearance model following the strict principle.Then,the Coordinate Conversion module is used to convert the obstacle location information into parameters under the airport spatial coordinate system,and the corresponding limit height is calculated in the clearance elevation model for the clearance ultra-high evaluation.Finally,through eight comparative experiments between the simplified model and the analytical solution model,the mathematical model of the constructed airport clearance surface and the headroom elevation model are applied to the actual airport case,and the effectiveness of the analytical solution model is verified.With Cesium as the development platform,the automatic generation function of the three-dimensional multi-runway airport clearance model is realized,which improves the digital level and efficiency of airport clearance management.The multi-runway airport clearance model improves the capacity utilization rate of the airport,and the analytical solution model improves the calculation accuracy and speed of the clearance limit height compared with the traditional simplified model,greatly enhances the manager’s understanding of the clearance model,improves the work efficiency of the management personnel,and helps to build a harmonious clearance and ensure the safety of aircraft navigation.