A Second-Order Lead Angle Reshaping Guidance Method with Attack Angle and View Angle Constraints

Abstract

The invention belongs to the field of missile guidance system design, and relates to a second-order lead angle reshaping guidance method with constraints of an attack angle and a field of view, comprising: establishing a guidance equation for a missile intercepting target; The differential equation system with the relative distance as the independent variable is obtained, and the expression of the guidance law is obtained. At the same time, the quadratic function based on the relative distance is designed as the change curve of the missile lead angle; based on the boundary conditions and attack angle constraints, the missile lead angle change curve is solved. Analytical guidance law is obtained by using unknown parameters; by limiting the maximum amplitude of the missile's lead angle curve, the seeker field of view angle constraint is achieved, and the reachable area of ​​the attack angle is obtained. The present invention adopts the analysis method based on the reshaping of the lead angle, does not need to linearize the model, and does not need to repeat the trial and error of the guidance parameters, and is suitable for the guidance tasks with the constraints of the attack angle and the limited field of view of the seeker, It has the characteristics of simple design and use, high reliability and strong applicability.

Description

Technical field [0001] The present invention belongs to the design area of ​​the missile guidance system, and in particular, there is a second-order front angle remodeling method having an attack angle and guiding head angle constraint. Background technique [0002] The guidance system is one of the core technologies of the missile. When the pneumatic shape and power system of the missile are determined, the guidance system determines the operational performance of the missile. The basic task of the guidance system is to produce a suitable guidance instruction to make the missile to obtain the minimum end deabble. This type of task index is single, the design is simpler, and the method is also mature. However, modern war gives missiles increasingly complex combat missions, and end-to-target is not only a unique indicator of completing military tasks. A new tank with composite armor is equipped with a strong target such as warships such as the advanced air defense system. High com...

AI Technical Summary

Problems solved by technology

Most of the existing guidance methods with attack angle constraints and field of view constraints often need to linearize the mathematical model of the relative motion of the missile and the target, or need to assume that the flight speed of the missile is a constant value. Brings certain limitations and reduces the applicability of the method

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