Research On Airport Airspace Saving Based On Approach Control Path Optimization

With the development of the airport construction in China,the number and density of airports are increasing day by day,and the problem of airspace congestion has become increasingly prominent.In view of the fact that the research on airport airspace saving is basically blank at present,it is of great significance and value to carry out research on airport airspace saving.,carrying out relevant work will help release more airspace for the Transportation Airport construction and the General Aviation Airport construction of China in the future.enrich the connotation of the Green Airport,and promote the sustainable development of civil airport.The thesis analyzes the current situation and problems of the airspace utilization of airports in my country,and systematically proposes theories and methods of approach control path optimization based on Poitn Merge System to save airspace.By the use of four-dimensional trajectory prediction technology,the flight interval can be controlled more accurately,and it will help lay the foundation for improving the safety and the utilization rate of airport airspace.In order to improve the operating efficiency of airspace,measures such as keeping the arrival aircrafts and the departure aircrafts separate,optimizing arrival corridors and departure corridors(handover points),and optimizing the flight path are adopted.The genetic algorithm is used to optimize the flight path and landing sequence of the aircrafts,and solve the problem of matching the flow demand and the flow distribution.The thesis puts forward the evaluation index of airspace saving in the airport terminal airspace,and the evaluation method of airspace saving quality based on flight delay.In accordance with the above-mentioned theories and methods,the thesis implements airport terminal area design and operation optimization based on airspace saving for single airport terminal area(Harbin Airport)and multi-airport terminal area(Lanzhou Airport,Xining Airport).After optimization,the area of the Harbin terminal airspace is reduced from 30487km~2 to 24341km~2,and the airspace saving rate is 18.3%.And the area of the Lanzhou/Xining terminal airspace is reduced from 57499km~2 to 47181km~2,with an airspace saving rate of 17.9%.Using AIRTOP software to evaluate the quality of airspace savings in the above two terminal areas,it is found that the average delays of the three airports are reduced by 12.8%,14.1%and 16.6%,respectively,which proves that the design and operation plan can reduce the area of the airport terminal airspace based on improving the operation efficiency of the terminal area.