Large-scale UAV swarm path planning based on mean-field reinforcement learning

In this paper, a deep deterministic policy gradient algorithm based on Partially Observable Weighted Mean Field Reinforcement Learning (PO-WMFRL) framework is designed to solve the problem of path planning in large-scale Unmanned Aerial Vehicle (UAV) swarm operations. We establish a motion control and detection communication model of UAVs. A simulation environment is carried out with No-Fly Zone (NFZ), the task assembly point is established, and the long-term reward and immediate reward functions are designed for large-scale UAV swarm path planning problem. Considering the combat characteristics of large-scale UAV swarm, we improve the traditional Deep Deterministic Policy Gradient (DDPG) algorithm and propose a Partially Observable Weighted Mean Field Deep Deterministic Policy Gradient (PO-WMFDDPG) algorithm. The effectiveness of the PO-WMFDDPG algorithm is verified through simulation, and through the comparative analysis with the DDPG and MFDDPG algorithms, it is verified that the PO-WMFDDPG algorithm has a higher task success rate and convergence speed.