Several-for-one collaborative guidance method based on target probability distribution information

Abstract

The invention discloses a several-for-one collaborative guidance method based on target probability distribution information, and belongs to the field of aircraft guidance. The problems that due to the fact that an existing guidance method is adopted in a near space hypersonic target, the target detection precision is low, the trajectory prediction accuracy is low, terminal guidance time is too short, so that the requirement for the overload response speed of an interceptor is too high are solved. The method is characterized by comprising the steps that relative motion measuring information between the interceptor and the target is acquired; Kalman filtering is used for processing the relative motion measuring information by considering the state value of the interceptor, the estimated value of the target state at the current moment is obtained, and a target terminal moment location probability density function is obtained by considering the kinetic equation of target motion; the integrals of the target terminal moment location probability density function in a plurality of interceptor reachable sets are constructed as a collaborative guidance cost function; several-for-one collaborative guidance optimizes problem solving is carried out. The method is applied to a plurality of aircrafts to intercept the hypersonic target in a collaborative mode, and has wide application prospects.

Description

technical field [0001] The invention relates to a many-to-one cooperative guidance method, which belongs to the field of aircraft guidance. Background technique [0002] The increased speed and maneuverability of targets presents new challenges to current guided weapons. In particular, the emergence of hypersonic targets in near space makes existing precision-guided weapons powerless. The difficulty of intercepting hypersonic targets in near space is mainly reflected in the following aspects: On the one hand, the target’s flight speed is fast, and its flight speed is generally greater than 8 Ma, or even 20 Ma. If the interception method of tail pursuit is adopted, the interceptor is required to have a higher speed , if a head-on interception method is adopted, since the approach speed of the missile and the target is the sum of the absolute speed of the interceptor and the target, when the initial distance between the missile and the target is fixed, the terminal guidance t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-to-one cooperative guidance method based on target probability distribution information to solve the problem of low detection accuracy and low ballistic prediction accuracy of existing guidance methods for coordinated guidance of hypersonic targets in adjacent space. The problem that the terminal guidance time is too short leads to the problem that the overload response speed of the interceptor is too high

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