Hybrid Variable Structure DBN Mission Decision-Making Method for UAV Swarm

Bowei Liu, Jingliang Sun, Teng Long, Dawei Liu, Yan Cao
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Abstract

To cope with the dynamic mission decision-making issue in complex environments for UAV swarm, a hybrid variable structure-based dynamic Bayesian network (HVSDBN) inference decision-making method is proposed. Firstly, the UAV swarm mission decision-making model is established to assess the UAV swarm state and threat state accurately. To further improve the accuracy of decision-making, the threat assessment model and swarm state assessment model are built by using mixed continuous and discrete variables, respectively. Furthermore, a dynamic HVSDBN decision-making algorithm based on hybrid performance-capability parameters is proposed, which can adjust the structure of the decision model according to the priori information and observation data to improve the adaptability of the solution strategy. Simulation results demonstrate that, the HVSDBN method can im-prove the variance of decision results by 25.03% compared with traditional method, which effectively improves the accuracy of UAV swarm mission decision-making under complex dynamic environment.
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无人机群混合变结构DBN任务决策方法
针对复杂环境下无人机群的动态任务决策问题,提出了一种基于混合变结构的动态贝叶斯网络(HVSDBN)推理决策方法。首先,建立无人机群任务决策模型,准确评估无人机群状态和威胁状态;为了进一步提高决策的准确性,分别采用混合连续变量和离散变量建立了威胁评估模型和群体状态评估模型。在此基础上,提出了一种基于混合性能参数的HVSDBN动态决策算法,该算法可以根据先验信息和观测数据调整决策模型的结构,提高求解策略的适应性。仿真结果表明,与传统方法相比,HVSDBN方法可将决策结果方差提高25.03%,有效提高了复杂动态环境下无人机群任务决策的精度。
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