A Design Method of Attack Time Constrained Guidance Law for Intercepting Maneuvering Targets

Abstract

The invention provides a method for designing an attack time-constrained guidance law for intercepting a maneuvering target. The steps are: obtain the second-order dynamic equation of the line-of-sight angle of the missile; design a quadratic function based on time as the reference line-of-sight turn rate that the missile needs to track; The second-order dynamic equation of line-of-sight angle adopts the sliding mode control method to design the guidance law with attack time constraints. The design method of the present invention is a sliding mode guidance law design method based on the reference line-of-sight rate, which is a guidance law with anti-interference performance, fast tracking of the expected line-of-sight rate, and accurate target hitting. parameters, so as to realize the constraint on the attack time.

Description

technical field [0001] This application relates to the field of missile guidance system design, specifically but not exclusively, to a design method of an attack time-constrained guidance law for intercepting a maneuvering target, which is mainly applied to a plurality of anti-ship missiles to complete the saturation attack task on a maneuvering target. Background technique [0002] At present, with the development of close-in defense systems for large ships on the sea surface, the use of a single anti-ship missile to attack such targets has a greater risk, 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 on surface ships with multiple anti-ship missiles, so as to restrict the defense system with limited coverage. The most critical technology to implement this kind of saturation attack is to set requirements for the attack time of the missiles, so that...

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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