Multi-aircraft cooperative detection and guidance integrated method and system

Abstract

The invention discloses a multi-aircraft cooperative detection and guidance integrated method and system. The method comprises the steps of obtaining the initial lateral distance between an interceptor and a maneuvering target, the initial lateral relative speed between the interceptor and the maneuvering target, the initial acceleration of the maneuvering target and the initial acceleration of the interceptor; determining an initial state vector according to the initial lateral distance, the lateral relative speed, the initial acceleration of the maneuvering target and the initial acceleration of the interceptor; determining measurement information according to the initial state vector and interceptor noise; based on the measurement information, obtaining an estimated state vector throughinteractive multi-model filtering; determining optimal control input according to the estimated state vector; and controlling the sight angles of the two interceptors according to the optimal controlinput to realize tracking interception of the target. Interactive multi-model filtering is introduced to recognize the switching time and state of target maneuvering, the sight separation angle of the two interceptors is modulated, the target detection precision is enhanced, and target tracking and interception are achieved.

Description

technical field [0001] The invention relates to the field of target tracking, in particular to an integrated method and system for multi-aircraft cooperative detection and guidance. Background technique [0002] For the situation where two interceptors intercept an enemy target capable of performing a bang-bang optimal evasion maneuver. The traditional cooperative guidance law that considers that two interceptors arrive at the target at the same time often does not consider the influence of the relative detection configuration on the accuracy of the intercepted target, because when the multi-aircraft cooperative angle measurement method is used to further estimate the distance information, if the multi-aircraft and the target share It is impossible to estimate the relative distance when they are collinear, and the estimation error is larger when they are approximately collinear. Therefore, it is necessary to consider the influence of the relative detection configuration of ...

AI Technical Summary

Problems solved by technology

In addition, for the traditional KF / SF method of estimating the target state, its adaptability to the multi-modal motion mode of performing bang-bang maneuvers is low, and the error of the target state estimation accuracy is large

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