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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (2): 324157-324157.doi: 10.7527/S1000-6893.2020.24157

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Multi-objective optimization of continuous descending trajectories in flexible airspace

YANG Lei1, LI Wenbo2, LIU Fangzi1,3, CHEN Yutong1, ZHAO Zheng1   

  1. 1. College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;
    2. School of Software Technology, Zhejiang University, Hangzhou 315100, China;
    3. Department of Strategic Development, ATM Bureau, CAAC, Beijing 100020, China
  • Received:2020-04-29 Revised:2020-06-10 Published:2020-09-17
  • Supported by:
    National Natural Science Foundation of China (61903187);Natural Science Foundation of Jiangsu Province(BK20190414)

Abstract: Continuous Descending Operation (CDO), an important part of the concept Trajectory Based Operation (TBO), has a significant effect on reducing fuel consumption and noise impact in the airport terminal airspace. Simple, efficient, flexible airspace structure, and highly automatic conflict-free and energy saving trajectory planning are the core elements for the realization of CDO in high-density terminal airspace. We design a new type of airspace named Inverted Crown-Shaped Arrival Airspace (ICSAA) adapted from Point Merge and its operational procedures. Based on the ICSAA, a conflict-free continuous descending trajectory optimization model is established to minimize both fuel consumption and travel time, which is efficiently solved by the adapted NSGA-Ⅱalgorithm. The results demonstrate strong and reliable performance of the proposed trajectory optimization in the new airspace in supporting pre-tactical and tactical operations in complex traffic scenarios, thereby improving flight efficiency, economy and airspace capacity, and further providing a new perspective and method for promoting the application of CDO to high-density airports.

Key words: air traffic management, airspace design, terminal airspace, Continuous Descending Operation (CDO), trajectory planning

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