In this paper, time-coordinated reentry guidance of multi-hypersonic vehicles is investigated in consideration of requirements of saturation attack. To solve the problem of unpredictability and uncontrollability of reentry time and achieve cooperative reentry, a new time-controlled reentry guidance law and cooperative reentry structure are proposed. The reentry guidance law improves real-time performance and constraint management capability of that of existing laws. The structure consists of two layers. To achieve the controllability and anti-interference of reentry flight time, the lower layer adopts the time-controlled reentry law based on the neural network. The upper layer generates time-coordinated information according to different coordination strategies based on characteristics of different reentry phases. The structure is suitable for centralized or distributed communication structure, and the upper coordination function can be designed and expanded according to needs of tasks. Time-controllability of the reentry guidance law and effectiveness of the reentry structure are verified by numerical simulations.
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