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Reinforcement learning-based missile terminal guidance of maneuvering targets with decoys

Chinese Journal of Aeronautics 2023年第12期36卷 309-324页

作者： Tianbo DENG Hao HUANG Yangwang FANG Jie YAN Haoyu CHENG School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Unmanned System Research Institute Northwestern Polytechnical UniversityXi’an 710072China

In this paper,a missile terminal guidance law based on a new Deep Deterministic Policy Gradient(DDPG)algorithm is proposed to intercept a maneuvering target equipped with an infrared ***,to deal with the issue that the missile cannot accurately distinguish the target from the decoy,the energy center method is employed to obtain the equivalent energy center(called virtual target)of the target and decoy,and the model for the missile and the virtual decoy is ***,an improved DDPG algorithm is proposed based on a trusted-search strategy,which significantly increases the train efficiency of the previous DDPG ***,combining the established model,the network obtained by the improved DDPG algorithm and the reward function,an intelligent missile terminal guidance scheme is ***,a heuristic reward function is designed for training and learning in combat ***,the effectiveness and robustness of the proposed guidance law are verified by Monte Carlo tests,and the simulation results obtained by the proposed scheme and other methods are compared to further demonstrate its superior performance.

关键词： Deep deterministic policy gradient infrared decoy Maneuvering target Reinforcement learning Terminal guidance law

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Experimental and numerical study of chaff cloud kinetic performance under impact of high speed airflow

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Chinese Journal of Aeronautics 2018年第11期31卷 2080-2092页

作者： Hesong HUANG Zhongxiang TONG Shijie CHAI Yu ZHANG College of Aeronautics Engineering Air Force Engineering University

To solve the kinetic and diffusion problem of surface-type infrared decoy, multi-chaff kinetic models are established and chaff cloud holistic kinetic performance are analyzed under the impact of high speed airflow in this work. Chaffs rotate rapidly during the motion under the impact of high speed airflow. The rotation speed is correlated with lift, position of pressure center and aerodynamic damping. Computational Fluid Dynamics(CFD) is used to compute the aerodynamic coefficients of chaff. It is found that there exists serious aerodynamic interference which mainly relates to the overlapping area and distance among chaffs during the diffusion of chaff cloud. The chaff wind tunnel test and rocket sled experiment are carried out to verify the credibility of the models in this work. Then, the variation of chaff cloud expectation and extremum are analyzed to achieve the holistic kinetic and diffusing performance of chaff cloud. Simulation results demonstrate that the chaffs diffuse rapidly under the impact of high speed airflow and chaff cloud can be formed rapidly within 0.5 s. The shape of the chaff cloud is similar to cone that forms a certain angle with the horizontal plane and most chaffs focus on the second half.

关键词： Aerodynamic coefficients Chaff Computational fluid dynamics infrared decoy Wind tunnel test

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