Guidance method with terminal restraint based on virtual target point

Abstract

The invention discloses a guidance method with terminal restraint based on a virtual target point and belongs to the technical field of aircraft guidance and control systems. By using a target virtualization method, an aircraft can fly in the optimum height to attack a target; a virtualized target is positioned, above a real target, in the height, namely a detonation height which is required for a damage element; by designing a guidance law, when the aircraft reaches an imaginary target, a warhead detonates; and the conventional mode of attacking the real target by flying is changed into a guidance mode of flying to the virtualized target and detonating according to a required attitude angle. By adoption of the guidance law of the method, the aim that the aircraft with the explosion-formed damage element flies and attacks in an expected height can be fulfilled, the requirement of the optimum detonation height of the damage element is met, the problem of the attitude angle of the aircraft with the explosion-formed damage element during end attacking can be solved, and the requirement of the detonation moment of the damage element on the attitude angle of the aircraft is met.

Description

technical field [0001] The invention belongs to the field of aircraft guidance and control system design, relates to the problem of designing a guidance law for an aircraft equipped with an explosive forming damage element, and in particular relates to how to use a virtual target point in the flight guidance process to realize the aircraft skimming and hitting the top, and Make the aircraft maintain a specific attitude angle when the damage element is detonated. Background technique [0002] Explosive forming damage element means that after the warhead is detonated, under the action of shaped explosives, the metal powder cover is forged into a penetrating body similar to a projectile. The penetrating body has stable flight characteristics and penetrates with high-speed kinetic energy. Into the target, to achieve accurate and efficient attack tasks. The design of the guidance law of the aircraft equipped with the blast-shaped damage element faces new problems: due to the one...

AI Technical Summary

Problems solved by technology

The guidance law design of the aircraft equipped with explosive forming damage elements is facing new problems: due to the one-way narrow beam of the explosive forming damage elements and the attack method of grazing and hitting the top, the explosive forming damage elements and the attitude of the aircraft at the moment of detonation It is closely related to the position of the aircraft; especially for different attack targets, in order to obtain the best damage effect, different detonation modes are required to form the desired damage element form (such as long rod jet or explosive shaped projectile), and different detonation modes The mode has strict requirements on the height of the warhead detonation moment

The traditional guidance law does not include the terminal restraint angle and the height limit of the detonation moment

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