| Citation: | DU Z M，ZHANG J F，GUI X H. Scheduling optimization for continuous climb and descend operations in busy terminal area[J]. Journal of Beijing University of Aeronautics and Astronautics，2025，51（9）：3193-3202 （in Chinese） doi: 10.13700/j.bh.1001-5965.2023.0415
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Based on the current terminal airspace structure, a novel scheduling method for arrival and departure aircraft based on trajectory optimization, conflict detection, and multi-objective optimization is proposed to assist in continuous climb and descent operations in busy terminal airspace. Firstly, a vertical profile optimization method for continuous climb and descent operations is proposed based on multi-stage optimal control theory and the Gaussian pseudo-spectral method, achieving trajectory optimization for continuous climb and descent operations by cost index. Secondly, according to the wake separation and clearance separation used by the runway operations and the horizontal and vertical separation of air operations, an aircraft conflict detection model is established using Mahalanobis distance. Subsequently, considering the demands of operational units such as air traffic control, airlines, and airports, a multi-objective scheduling model and method with achievable optimization results were proposed for arrival and departure aircraft. Finally, two sets of arrival and departure data from Guangzhou Baiyun Airport during peak hours were selected, multiple interval parameters were set, alternative paths were designed, and case analysis and comparative research were conducted. The results indicate that during peak departure hours, the terminal airspace of Guangzhou Baiyun Airport can achieve continuous climb and descent operations during peak hours. Furthermore, during peak arrival hours, two aircraft cannot be scheduled. Introducing alternative paths can reduce the number of aircraft that cannot be scheduled.
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