受限航路空域自主航迹规划与冲突管理技术

doi:10.7527/S1000-6893.2020.24045

Abstract

Abstract: To solve the problem of human-machine awareness synchronization in air traffic management automation systems based on trajectory operation, this study examines real-time autonomous 4D Trajectory (4DT) Conflict Detection and Resolution (CD&R) technology for restricted airspace with route operation as the research object. In Free Route Airspace (FRA) environment, a grid-based discrete processing and calculation method for airspace is proposed. Based on this, a two-stage method for autonomous trajectory operation in restricted airspace is presented. In stage one, the Visibility Graph (VG) method and Dijkstra algorithm are used to realize rapid planning of the desired aircraft trajectory meeting the constraints of the restricted area. In stage two, a spatio-temporal reachable space model and its graphical expression method are proposed. Aircraft position update models in different situations are derived according to continuous flight dynamics. The local CD&R method, aiming at the shortest flight distance, was adopted to realize the autonomous trajectory and speed linkage planning of the aircraft, thereby supporting the generation of conflict-free 4DT with air-ground and human-machine cognitive synchronization. Finally, simulation experiments using a typical airspace in western China as the operating scenario verify the computational efficiency and model validity of the proposed method. Sensitivity analyses are performed on two key parameters: grid size and detection distance. The results show that the proposed method can support autonomous trajectory operation in high-density operating environments in complex airspace, thus providing new ideas and methods for the promotion of autonomous air traffic system development.

Key words: trajectory-based operation, air traffic management, autonomous operation, free route airspace, air-ground cooperative cognition

CLC Number:

V355

CHEN Yutong, HU Minghua, YANG Lei, ZHANG Haoran, ZHAO Zheng. Autonomous trajectory planning and conflict management technology in restricted airspace[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(9): 324045-324045.

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Autonomous trajectory planning and conflict management technology in restricted airspace

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