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Acta Armamentarii ›› 2019, Vol. 40 ›› Issue (9): 1849-1859.doi: 10.3969/j.issn.1000-1093.2019.09.010

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A Finite-time Cooperative Guidance Method Considering Cooperative Detection Efficiency

ZHANG Shuai, GUO Yang, WANG Shicheng, WANG Shaobo   

  1. (Precision Guidance and Simulation Laboratory, Rocket Force University of Engineering, Xi'an 710025, Shaanxi, China)
  • Received:2018-12-11 Revised:2018-12-11 Online:2019-10-31

Abstract: For the multiple missiles intercepting a maneuvering target cooperatively, a cooperative guidance method considering a cooperative detection geometry configuration is designed based on the finite-time control theory. For the first-order dynamics of the missiles, a cooperative interception model with detection geometry configuration is established according to the relative motion equations of particles and the principle of cooperative detection. The sufficient conditions for the finite time boundedness of system state and the finite time stability of system input and output are given based on the differential inequality theory. And on this basis, a finite time cooperative guidance method is designed. The proposed method uses the measurement matrix to characterize the dynamic quality of system state and output, and can ensure that the state and output of guidance system are bounded and stable within a finite time interval. The simulated results show that the proposed guidance method can ensure that the LOS separation angle converges to the preset angle, the LOS angular rate converges to zero, and the acceleration does not exceed the maximum physical limit when a target is maneuvering. Compared with proportional navigation and optimal guidance law, the proposed method has the advantages in cooperative detection and guidance. Key

Key words: missile, cooperativedetection, cooperativeguidance, finitetime, line-of-sightangle

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