Air combat three-body confrontation optimal prediction guidance method adopting golden section search

Abstract

The invention relates to the technical field of aerospace, and discloses an air combat three-body confrontation optimal prediction guidance method adopting golden section search. The air combat three-body confrontation optimal prediction guidance method adopting golden section search comprises the following steps of establishing a kinematics model of air combat three-body confrontation three warring factions, selecting an optimization index function according to the real-time motion state of the three warring factions, optimizing and solving by adopting a golden section method to obtain the optimal residual interception time, integrating the motion state of an incoming missile to the residual interception moment, selecting as a virtual target point, and guiding a defensive missile by adopting a proportional guidance law by taking the virtual target point as a target. The air combat three-body confrontation optimal prediction guidance method adopting golden section search is based on the prediction thought, the coupling state of an aircraft in the air combat three-body confrontation scene is considered in the guidance law design, the future relative distance is selected as an optimization index, optimization is conducted on a nonlinear coupling motion model, the designed guidance law effectively improves the defensive missile interception probability, the miss distance is reduced, and the demand guidance overload is smaller than that of a traditional guidance law, so that the low-performance defensive missile can intercept the high-speed and high-maneuverability incoming missile.

Description

technical field [0001] The invention relates to the field of anti-missile technology, in particular to an optimal predictive guidance method for air combat three-body confrontation using golden section search, which is suitable for guidance and control of aerospace vehicles. Background technique [0002] The three-body confrontation problem in air combat is composed of aircraft, incoming missiles, and defensive missiles. The incoming missiles target the aircraft for guided attacks, and the aircraft needs to launch defensive missiles to guide and intercept the incoming missiles, so as to complete self-defense. Since this problem includes not only the interception and guidance of defensive missiles to incoming missiles, but also the coupling relationship between aircraft and maneuvers to avoid incoming missiles, the design of defensive guidance laws is very difficult, and has attracted extensive attention at home and abroad in recent years. [0003] In the traditional guidance...

AI Technical Summary

Problems solved by technology

[0003] In the traditional guidance law research, the guidance law is mainly designed for one-to-one situations, but in the three-body confrontation scenario of air combat, the relative speed of the defensive missile and the incoming missile is relatively high. The coupling relationship, the amount of misses caused by guidance is large, the accuracy is low, the guidance demand overload is high, and the guidance energy consumption is also large

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