Sight line based finite time convergence active defense guidance control method

Abstract

The invention provides a sight line based finite time convergence active defense guidance control method, relates to a guidance control method, in particular to an active defense guidance control method, and aims at solving the problem that a defensive missile is limited in overload capacity. The sight line based finite time convergence active defense guidance control method comprises the steps of firstly modeling relative motions of a target, the defensive missile and an intercept missile, adopting a sight line guidance mode to design a guidance rule for the defensive missile, then adopting a nonsingular terminal sliding mode to control the designed guidance rule, respectively defining sliding mode variables (shown in the description) of a longitudinal plane and a lateral plane, performing derivation on the sliding mode variables, substituting relative motion equations of the target, the defensive missile and the intercept missile into the variables and obtaining the guidance rule (shown in the description) of the longitudinal plane and the guidance rule (shown in the description) of the lateral plane through compilation, and controlling the missiles according to the guidance rules. By means of the sight line based finite time convergence active defense guidance control method, overload needed by the defensive missile can be effectively reduced. The sight line based finite time convergence active defense guidance control method is suitable for active defense guidance control.

Description

technical field [0001] The invention relates to a guidance control method, in particular to an active defense guidance control method. Background technique [0002] With the improvement of missile defense system technology, ballistic missile penetration is facing great challenges. Due to the small maneuverability of the ballistic missile in the middle flight section outside the atmosphere, the ballistic trajectory is fixed and easily intercepted by the missile defense system. In order to avoid being intercepted by the missile defense system, traditional penetrating ballistic missiles adopt passive evasion methods, such as electronic jamming, stealth technology, releasing decoys, mid-course guidance, multiple warhead attacks, and maneuvering orbit changes. In contrast to this, the active defense method is adopted, that is, the ballistic missile releases the defensive missile, and then the defensive missile and its companion fly to intercept the intercepting missile launched ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of limited overload capability of defensive missiles, the present invention further proposes a line-of-sight-based limited-time convergent active defense guidance control method

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