Self-adaptive weighting differential game guidance method

Abstract

The invention belongs to the technical field of air vehicle guidance and provides a self-adaptive weighting differential game guidance method aiming at a high maneuvering target. The method includes deriving a differential game guidance law under the conditions of symmetrical complete information and asymmetrical incomplete information according to different information modes; self-adaptively adjusting a penalty coefficient in a quadratic index according to estimation results of a state filter and a current maneuvering capacity; and finally, switching the different information modes according to estimation errors and self-adaptively changing a pursuit strategy to further form the self-adaptive weighting differential game guidance method. According to the self-adaptive weighting differential game guidance method, state information measured by a sensor is fully utilized, the information modes are timely adjusted according to changes of outside environments, the problems that reasonable evidences for setting target penalty coefficients are absent and ordinary differential game guidance laws are conservative are effectively solved, guidance accuracy of air vehicles is effectively and scientifically improved, and the method has high application values.

Description

technical field [0001] The invention belongs to the technical field of aircraft guidance, in particular to an adaptive weighted differential countermeasure guidance method. Background technique [0002] With the development of aerospace science and technology, aircraft guidance technology has always been the focus of attention of countries all over the world. As the "nerve center" of the aircraft system, the guidance system plays an extremely important role. At present, the threat of various strong maneuvering targets (such as: tactical ballistic missiles, intelligent cruise missiles and intelligent drones, etc.) is becoming more and more prominent, which brings great challenges to the guidance and control systems of aircraft. Differential game theory combines game theory and optimal control theory, and has obvious advantages in describing the dynamic confrontation process. The "chasing and fleeing problem" described in his theory is exactly the problem of differential gam...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an adaptive weighted differential game guidance method, aiming at solving the problem that the currently designed differential game guidance law has no reasonable basis for determining the penalty coefficient of the target control amount, and the current differential game guidance law is based on symmetrical complete state information model, making the designed guidance laws too conservative

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