Systems Engineering and Electronics ›› 2025, Vol. 47 ›› Issue (7): 2329-2338.doi: 10.12305/j.issn.1001-506X.2025.07.25

• Guidance, Navigation and Control • Previous Articles    

Low-cost UAV navigation method based on AHRS for GNSS intermittent denial

Siying LIN1,2, Feng YU1,2,*, Zhi XIONG3, Fang WU4, Zijun ZHOU1,2   

  1. 1. School of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    2. Key Laboratory of Space Photoelectric Detection and Perception, Nanjing 211106, China
    3. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    4. East-China Institute of Computer Technology, Shanghai 201808, China
  • Received:2024-03-06 Online:2025-07-16 Published:2025-07-22
  • Contact: Feng YU

Abstract:

To improve the navigation performance of low-cost small unmanned aerial vehicle (UAV) when the global navigation satellite system (GNSS) signal is disturbed, a navigation method based on attitude and heading reference system (AHRS) is proposed. A dead reckoning model is constructed by using the error-bounded attitude information output of the AHRS, which can effectively delay the divergence of navigation errors during GNSS signal's denial. When the GNSS signal is effective, the navigation accuracy is further improved by correcting the attitude angle. The simulation results show that in the combination phase, the proposed method can further improve the attitude angle accuracy, and the navigation accuracy matches the traditional inertial navigation system. In the denial phase, the positional accuracy of the proposed method in horizontal and elevation is improved by 83.3% and 45.9% respectively compared to the inertial navigation system. Finally, the reliability of the simulation results is verified by semi-physical experiments.

Key words: attitude and heading reference system (AHRS), integrated navigation, denial environment, small unmanned aerial vehicle (UAV)

CLC Number: 

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