Journal of Astronautics ›› 2022, Vol. 43 ›› Issue (7): 911-920.doi: 10.3873/j.issn.1000-1328.2022.07.007

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ADP based Guidance Strategy for Maneuvering Target Interception under Radome Errors

GUO Jianguo, HU Guanjie, GUO Zongyi, WANG Guoqing   

  1. 1. Institute of Precision Guidance and Control, Northwestern Polytechnical University, Xi’an 710072, China;2. Research and Development Department, China Academy of Launch Vehicle Technology, Beijing 100076, China
  • Received:2021-12-03 Revised:2022-02-17 Online:2022-07-15 Published:2022-07-15

Abstract: Aiming at the radome error of missile seeker, a guidance strategy is proposed based on adaptive dynamic programming(ADP). Different from traditional methods of processing radome error estimation and compensation, this strategy avoids the error influence arising from the estimation process. In the scenario of missile intercepting maneuvering target, the interception problem is transformed into a robust optimal control problem. A cost function is designed to eliminate the influence of radome errors and target maneuvering, and to ensure the minimum control energy. The final maneuvering target interception guidance strategy is obtained by constructing a critic network, using adaptive dynamic programming to solve the approximate robust optimal guidance strategy, and attaching a robust control term. Using the Lyapunov stability theory, the uniformly ultimate boundedness of the weight error and the asymptotic stability of the closed loop system are proved. The simulation results verify the effectiveness of the proposed guidance strategy for intercepting maneuvering targets under radome errors.

Key words: Radome error, Adaptive dynamic programming, Guidance strategy, Robust optimal control, Lyapunov stability

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