Analytical guidance method for standard control miss distance of terminal guidance section

Abstract

The invention relates to an analytical guidance method for a standard control miss distance of a terminal guidance section. The analytical guidance method comprises the following steps: firstly, modeling the terminal guidance section; secondly, dividing a standard control trajectory at the terminal guidance section into a zero-order standard control trajectory and a first-order standard control trajectory according to a canonical perturbation theory; thirdly, performing analytic solution on a zero order item of the standard control trajectory at the terminal guidance section; fourthly, performing analytic solution on a first order item of the standard control trajectory at the terminal guidance section; and fifthly, acquiring a complete analytical solution of the standard control trajectory, and calculating a guidance command. The analytical guidance method disclosed by the invention has the advantages that firstly, an idea of taking a zero attack angle as standard control over the terminal guidance section of a homing missile is put forward, and a motion equation of the standard control trajectory is simplified; in addition, an attack angle required by guided correction is enabled to be located near zero, and speed loss brought by the guided correction is reduced; secondly, analytic solution is performed on a longitudinal trajectory at the terminal guidance section by adopting a canonical perturbation method, and high-precision analytical solutions of firing range, height, speed and trajectory inclination angle are obtained; and thirdly, a guidance method based on a generalized standard control miss distance is provided, and normal acceleration of the missile is greatly reduced; and meanwhile, the terminal attack angle is enabled to be converged to be zero.

Description

technical field [0001] The invention provides a guidance method for analyzing the amount of standard-controlled misses in the terminal guidance section, in particular to a guidance method for the amount of standard-controlled misses in the final guidance section for ground strikes, and belongs to the fields of aerospace technology and weapon technology. Background technique [0002] The zero-control miss amount is an important concept of the homing missile terminal guidance problem. The narrow zero-control miss amount refers to the minimum distance that can be achieved between the missile and the target without maneuvering; the generalized zero-control miss amount The amount of miss control also includes terminal angle error, terminal speed error, etc. Many classic guidance methods are derived from zero-controlled misses, such as proportional guidance laws, augmented proportional guidance laws, and ballistic shaping guidance laws. These guidance laws are all derived from th...

AI Technical Summary

Problems solved by technology

However, the real guidance problem is nonlinear, and the above-mentioned classical guidance laws cannot fully meet the needs of the current guidance method design.

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