A Guidance Method of Attack Time Control

Abstract

The invention discloses a guidance method for attack time control. The method comprises the following steps: considering the three-dimensional space of missile and target movement, and establishing the mathematical model of missile and target. The dynamic equations of missile trajectory inclination and trajectory deflection angle are obtained, and the dynamic equations of projectile-to-target distance, missile line-of-sight angle and missile line-of-sight angle are obtained. On this basis, the dynamic equation of missile attack time error is established. Then, the guidance law of the missile is designed separately according to the pitch channel and the yaw channel: the guidance law of the pitch channel is designed as an augmented proportional guidance guidance law, and the guidance law of the yaw channel is designed as a guidance law with an attack time error feedback item, and the trajectory is adjusted trajectory to achieve time control of target strikes. When the yaw angle is zero, the yaw channel guidance law is adjusted to avoid singular situations. The invention estimates the attack time error, makes the attack time error tend to zero and the projectile-to-target distance tends to zero through the guidance strategy, and has the characteristics of clear structure and strong applicability.

Description

technical field [0001] The invention relates to a guidance method for attack time control, which belongs to the design field of missile guidance systems, and in particular to a guidance method for controlling missiles in three-dimensional space to complete tasks according to specified time. Background technique [0002] With the rapid development of anti-missile technology, it is increasingly difficult for missile attacks launched by traditional combat strategies to break through the enemy's defense system, and the battlefield survivability of a single missile is also greatly reduced. In response to this problem, some experts have proposed that multiple missiles can be used to cooperate to achieve saturated strikes on targets. This method can effectively restrict the enemy's anti-missile system, making it difficult to take into account the attack of multiple missiles. A key issue in realizing saturation strike is how to control multiple missiles to attack the target accordi...

AI Technical Summary

Problems solved by technology

[0003] At present, there have been some research results on the guidance law design considering the attack time constraint, but most of these works restrict the movement of the missile in one plane, and the time-controlled guidance law applicable to three-dimensional space remains to be studied

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