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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2022, Vol. 43 ›› Issue (8): 25645.doi: 10.7527/S1000-6893.2021.25645

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Research progress of vision based aerospace conflict sensing technologies for small unmanned aerial vehicle in low altitude

ZHANG Zhouyu1, CAO Yunfeng1, FAN Yanming2   

  1. 1. College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. ACIC Shenyang Aircraft Design and Research Institute, Shenyang 110035, China
  • Received:2021-04-12 Revised:2021-08-17 Online:2022-08-15 Published:2021-08-17
  • Supported by:
    National Natural Science Foundation of China (61673211);Open Project Funds for the Key Laboratory of Space Photoelectric Detection and Perception (Nanjing University of Aeronautics and Astronautics),Ministry of Industry and Information Technology (NJ2020021-01);Fundamental Research Funds for the Central Universities (NJ2020021)

Abstract: Unmanned Aerial Vehicles (UAV) aerospace conflict sensing is the most challenging key technology in national aerospace integration. Considering the broad application of small sized UAVs in low altitude aerospace, this paper makes a research survey of vision based aerospace conflict sensing technologies. Firstly, the application status of small sized UAVs in low altitude aerospace is briefly introduced, and the typical features of this kind of UAVs is summarized. Secondly, based on the categories of sensing objects, existing aerospace conflict sensing technologies are classified into cooperative sensing method and non-cooperative sensing method. The sensing technology most appropriate for small sized UAVs in low altitude aerospace is concluded. Then, the research progress of three key technologies of vision based aerospace conflict sensing, including visual information pre-processing, vision based intruder detection, vision based collision avoidance trajectory planning, are introduced. Finally, the challenges to be solved in this area are concluded, and several future research trends are introduced.

Key words: low altitude aerospace, Unmanned Aerial Vehicle (UAV), aerospace conflict, machine vision, sensing and avoidance

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