Leader-following cooperative guidance law with specified impact time
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ader-following cooperative guidance law with specified impact time LI GuoFei
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, LI Qing , WU YunJie , XU PengYa & LIU JianWei
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School of Cyber Science and Technology, Beihang University, Beijing 100191, China; School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China; Beijing Advanced Innovation Center for Big Data and Brain Machine Intelligence, Beihang University, Beijing 100083, China 2
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Received May 4, 2020; accepted June 3, 2020; published online September 29, 2020
The problem of guidance law is investigated for multiple interceptors to attack a target cooperatively. A leader-following cooperative guidance strategy is presented to render the leader and the followers reach the target at specified impact time. The guidance law of leader is given to meet the demand of specified impact time. The arrival time is synchronized by enforcing the ranges-to-go of followers keep consensus with that of leader. The convergence time bound is estimated without dependence on the initial states, since the proposed leader-following cooperative guidance law is fixed-time convergent. The simulation is developed to validate the availability of proposed cooperative guidance law. cooperative guidance, leader-following, specified impact time, fixed-time convergence Citation:
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Li G F, Li Q, Wu Y J, et al. Leader-following cooperative guidance law with specified impact time. Sci China Tech Sci, 2020, 63, https://doi.org/ 10.1007/s11431-020-1669-3
Introduction
Nowadays, some targets are protected by defensive systems, the regular guidance law is hard to complete the warfare task [1,2]. The salvo attack has been seen as an efficient way by penetrating the defensive system [3,4]. Currently, the impact time control guidance (ITCG) and cooperative guidance are two dominant patterns to achieve the salvo attack with simultaneous arrival. The ITCG law is designed individually for each interceptor with assigned impact time command [5,6]. In consideration of the field-of-view constraint, an ITCG law was proposed in ref. [7] by employing backstepping control, the leading angle can be restricted to a specified range. In the basis of Lyapunov stability theory, an ITCG law was given in ref. [8] to attack a stationary target. To fulfill the salvo attack mission
with impact time command, an ITCG method was presented in ref. [9] based on the proportional navigation guidance (PNG) law with an auxiliary term relevant to impact time error. By tracking a designed trajectory composed of two segments with respect to space curve and collision line, a three-dimensional ITCG law in ref. [10] fulfills the arrival time command via the trajectory adjustment. Nevertheless, no communication exists among the flight vehicles in above mentioned ITCG strategies. In contrast, the cooperative guidance achieves the salvo attack with the aid of communication network [11,12], this manner is beneficial to information sharing and resource integration. A cooperative guidance law was given in ref. [13] for ma
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