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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (7): 325354-325354.doi: 10.7527/S1000-6893.2021.25354

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

Analysis of low altitude UAV conflict resolution safety based on STPA-TOPAZ

ZHANG Honghong1,2,3, GAN Xusheng1,2, SUN Jingjuan1,2, ZHAO Guhao1,2, HAN Baohua1,2   

  1. 1. Air Traffic Control and Navigation College, Air Force Engineering University, Xi'an 710051, China;
    2. National Key Laboratory of Air Traffic Collision Prevention, Xi'an 710051, China;
    3. Unit 31664 of PLA, Golmud 816000, China
  • Received:2021-02-01 Revised:2021-06-21 Published:2021-06-18
  • Supported by:
    National Natural Science Foundation of China (61601497); Natural Science Basic Research Program of Shaanxi Province (2022JM-412);The President Foundation of Air Force Engineering University (XZJ2020005)

Abstract: To prevent the occurrence of dangerous approaches or accidents in the low-altitude UAV conflict resolution process, the security problem in the process was transformed into the control problem, and a conflict resolution security analysis method for the low altitude UAV was proposed based on STPA-TOPAZ. Firstly, based on Syster-Theoretic Accident Modeling and Processes (STAMP), the security control structure in the conflict resolution system is constructed. Then System-Theoretic Process Analysis (STPA) is used to determine system-level accidents and hazards based on the context information of system operation, identify the unsafe control behaviors in the process of conflict resolution, and analyze the key causes of unsafe control behaviors. Finally, the Traffic Organization and Perturbation Analyzer (TOPAZ) method is used to quantitatively describe the influence degree of the causal factors on system security, and identify the security bottleneck that restricts the system. The simulation results show the effectiveness and superiority of the STPA-TOPAZ method.

Key words: UAV, conflict resolution, system-theoretic process analysis, TOPAZ, safety assessmenthttp

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