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| Citation: | WANG Yuedong, GU Yijing, LIANG Yan, et al. Deep game of escorting suppressive jamming and networked radar power allocation[J]. Journal of Radars, 2023, 12(3): 642–656. doi: 10.12000/JR23023
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Deep Game of Escorting Suppressive Jamming and Networked Radar Power Allocation
DOI: 10.12000/JR23023
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Abstract
The traditional networked radar power allocation is typically optimized with a given jamming model, while the jammer resource allocation is optimized with a given radar power allocation method; such research lack gaming and interaction. Given the rising seriousness of combat scenarios in which radars and jammers compete, this study suggests a deep game problem of networked radar power allocation under escort suppression jamming, in which intelligent target jamming is trained using Deep Reinforcement Learning (DRL). First, the jammer and the networked radar are mapped as two agents in this problem. Based on the jamming model and the radar detection model, the target detection model of the networked radar under suppressed jamming and the optimized objective function for maximizing the target detection probability are established. In terms of the networked radar agent, the radar power allocation vector is generated by the Proximal Policy Optimization (PPO) policy network. In terms of the jammer agent, a hybrid policy network is designed to simultaneously create beam selection and power allocation actions. Domain knowledge is introduced to construct more effective reward functions. Three kinds of domain knowledge, namely target detection model, equal power allocation strategy, and greedy interference power allocation strategy, are employed to produce guided rewards for the networked radar agent and the jammer agent, respectively. Consequently, the learning efficiency and performance of the agent are improved. Lastly, alternating training is used to learn the policy network parameters of both agents. The experimental results show that when the jammer adopts the DRL-based resource allocation strategy, the DRL-based networked radar power allocation is significantly better than the particle swarm-based and the artificial fish swarm-based networked radar power allocation in both target detection probability and run time metrics. -
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References
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- Figure 1. An example of a suppression jammer protecting a target through the networked radar defense area
- Figure 2. The game closed-loop process of the jammer agent and the networked radar agent
- Figure 3. The relative spatial position of the jammer, radar and target
- Figure 4. The networked radar agent and environment interaction diagram
- Figure 5. The knowledge-assisted reward module for the networked radar agent
- Figure 6. The policy network of the networked radar agent
- Figure 7. The jammer agent and environment interaction diagram
- Figure 8. The knowledge-assisted reward function module for the jammer agent
- Figure 9. The hybrid policy network of the jammer agent
- Figure 10. The deployment of the networked radar and the trajectory of the target formation
- Figure 11. The rewards convergence curve
- Figure 12. The interference resource allocation result
- Figure 13. The target detection probability of three networked radar power allocation strategies
- Figure 14. The target detection probability of the DRL-based networked radar power allocation strategy under different interference models
- Figure 15. The networked radar power allocation results
- Figure 16. The indication that each radar node is interfered
- Figure 17. The distance variation of the jammer and the networked radar