Robust Cooperative Guidance Law for Simultaneous Arrival

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    In the cooperative simultaneous arrival problem, a group of interceptors are guided to simultaneously engage a stationary target. However, some interceptors may not follow the prescribed guidance law during the engagement, which can lead to interception failures. This brief investigates a new robust cooperative simultaneous arrival problem in the presence of misbehaving interceptors. A robust cooperative guidance law (RCGL) integrated with a local filtering algorithm is designed. Without the knowledge of faulty interceptors (no fault diagnosis procedure is needed), the RCGL achieves a simultaneous arrival between normal interceptors if the misbehavior of faulty interceptors can be characterized by a threat model. By characterizing the contracting behavior of the maximum gap between impact time estimates of normal interceptors, sufficient conditions are established to guarantee the convergence of RCGL. Furthermore, regardless the network connections, the impact times of normal interceptors are upper bounded by the maximum initial time-togo estimate of normal interceptors. Numerical comparison studies demonstrate the guidance performance of RCGL.
    Original languageEnglish
    JournalIEEE Transactions on Control Systems Technology
    Publication statusPublished - 27 Feb 2018


    • Robust cooperative guidance law
    • cooperative control
    • simultaneous arrival


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