Attack-time-constraint guidance-law design method of intercepting maneuvering target

Abstract

The invention provides an attack-time-constraint guidance-law design method of intercepting a maneuvering target. The method comprises the steps of: obtaining a second-order dynamic equation of a line-of-sight angle of a missile; designing a time-based quadratic function to use the same as a reference line-of-sight rate which the missile needs to track; and adopting a sliding-mode control method to design a guidance law with an attack time constraint on the basis of the second-order dynamic equation of the line-of-sight angle. The design method of the invention is a reference line-of-sight rate-based sliding-mode guidance-law design method, designs the guidance law which has anti-interference performance, and is capable of quickly tracking the expected line-of-sight rate and precisely hitting the target, and realizes the constraint on attack time through adjusting parameters of the reference line-of-sight rate.

Description

technical field [0001] The present application relates to the field of missile guidance system design, in particular but not exclusively, to a method for designing an attack time-constrained guidance law for intercepting maneuvering targets, which is mainly applied to multiple anti-ship missiles to complete the saturated attack task on maneuvering targets. Background technique [0002] At present, with the development of close-up defense systems for large ships on the sea surface, it is very risky to use a single anti-ship missile to attack such targets, and it is easy to be intercepted or destroyed by the opponent's defense system. In response to this problem, an effective attack strategy is to implement a saturation attack of multiple anti-ship missiles on surface ships to restrict the defense system with limited coverage. The most critical technology to implement this saturation attack is to put forward requirements on the attack time of the missiles, so that multiple mis...

AI Technical Summary

Problems solved by technology

However, there are relatively few studies on guidance laws with attack time constraints, especially the design of attack time-constrained guidance laws for maneuvering targets

This is mainly due to the fact that the maneuverability of the target brings a series of uncertainties to the guidance system and guidance information, so that the attack time-constrained guidance law for stationary / constant moving targets cannot be effectively applied to intercept maneuvering targets

At the same time, most of the existing attack time-constrained guidance laws need to rely on the remaining time to estimate information, or need to linearize the mathematical model of the projectile, which causes a certain degree of conservatism to the designed guidance law and reduces the Robustness of the guidance system

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