Second-order preposed angle remodeling guidance method with attack angle and view field angle constraints

Abstract

The invention belongs to the field of missile guidance system design, and relates to a second-order preposed angle remodeling guidance method with attack angle and view field angle constraints, wherein the method comprises the steps: establishing a guidance equation of a missile interception target; converting the guidance equation into a differential equation set taking the relative distance between a missile and the target as an independent variable to obtain a guidance law expression, and designing a quadratic function based on the relative distance to serve as a missile preposed angle change curve; and solving unknown parameters in the missile preposed angle change curve based on boundary conditions and attack angle constraints to obtain an analytic guidance law. by limiting the maximum amplitude of the missile preposed angle curve, seeker view field angle constraint is achieved, and an attack angle reachable domain is obtained. The analysis method based on preposed angle remodeling is adopted, linearization of the model is not needed, repeated trial and error of guidance parameters are not needed, and the method is suitable for guidance tasks with attack angle constraints andseeker view field limitation and has the advantages of being easy to design and use, high in reliability, high in applicability and the like.

Description

technical field [0001] The invention belongs to the design field of missile guidance systems, and in particular relates to a second-order leading angle reshaping guidance method with the constraints of the attack angle and the field of view angle of the seeker. Background technique [0002] The guidance system is one of the core technologies of the missile. When the aerodynamic shape and power system of the missile are determined, the guidance system determines the combat performance of the missile to a large extent. The basic task of the guidance system is to generate appropriate guidance commands so that the missile can obtain the minimum amount of terminal miss. This type of task has a single indicator, a relatively simple design, and a mature method. However, modern warfare entrusts missiles with more and more complex combat tasks, and the number of terminal misses is no longer the only indicator to measure the completion of military tasks. For targets with strong defe...

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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