Determining safe flight area of UAVs based on variable weight threat assessment

Abstract

To manage the complexity and uncertainty faced by an unmanned aerial vehicle (UAV) and identify a safe flight area in a battlefield environment, we propose a method for determining the safe flight area of the UAV based on the variable weight theory and a Markov model. In the threat calculation, the variable weight theory is introduced, so that the weight can be adjusted according to the position of the UAV relative to the threat area. Then, the Markov model is used to predict the environmental threat the UAV may encounter during its flight. Then, a fuzzy evaluation method is used to determine the threat level in the UAV flight area, and a cloud model is introduced to construct a membership function that improves the reliability of the result. Finally, the safe flight area of the drone is determined based on the threat threshold. The simulation results show that the proposed method for determining the safe flight area of the UAV is effective in a complex battlefield environment.