Abstract: The flight density and complexity of aircraft in terminal area are relatively high, and the processing capacity of this controlled area is the bottleneck restricting the efficiency of aviation system. Quantitative research on the control efficiency of arrival aircraft will help to enhance the control capacity and quality. Firstly, the standard mileage of regional area navigation(RNAV) standard instrument arrival procedure is proposed as the calcula tion basis of quantifying arrival control efficiency. Through the results of clustering algorithm based on random ized search, the aircraft RNAV standard instrument arrival procedures are obtained, taking the aircraft landing at Beijing Capital International Airport as the analysis object, the arrival control efficiency of the aircraft is calcu lated. Combined with the trajectory, the operation mode and characteristics of the aircraft under different RNAV standard instrument arrival procedures are discussed. Secondly, the influence factors of arrival control efficiency are discussed, and the gray correlation analysis method is used to quantify the influence degree and weight of each factor. The results show that the degree of radar vectoring and the change numbers of the three factors of navigation have a significant impact on the arrival control efficiency, while the flight flow and the standard mileage of RNAV standard instrument arrival procedure have a relatively small impact on the arrival control effi ciency. From the perspective of influence factors, more comprehensive and objective overall arrival control effi ciency is evaluated. Finally, from two aspects of the RNAV arrival procedure path and excellent control behavior mode, the approaches and methods to improve the arrival control efficiency are explored.

Key words: terminal area , arrival aircraft, control efficiency, regional area navigation(RNAV) standard instrument arrival procedure, trajectory