Air moving target tracking method and system

Abstract

The invention relates to an aerial moving target tracking method and system, and relates to the field of aircraft target tracking, and the method comprises the steps: respectively obtaining the flight speed and the speed inclination angle of an aircraft at the current moment; determining position coordinates of the aircraft and the target by using an aircraft kinematic model according to the flight speed and the speed inclination angle of the aircraft at the current moment, and further determining relative information by using a relative motion model; judging whether the relative distance is smaller than a set distance threshold value or not, and if yes, completing the tracking process; if not, generating a navigation ratio and acceleration control instruction by utilizing a near-end strategy optimization algorithm according to the relative information; determining the flight speed and the speed inclination angle of the aircraft at the next moment by using an aircraft kinematic model according to the navigation ratio and the acceleration control instruction; and updating the flight speed and the speed inclination angle of the aircraft at the current moment and re-determining the position coordinates of the aircraft and the target. According to the invention, the universality of target tracking, the tracking effect and the tracking control precision can be improved.

Description

technical field [0001] The present invention relates to the field of aircraft target tracking, in particular to a method and system for tracking air moving targets. Background technique [0002] The traditional proportional guidance method is one of the most widely used methods in current moving target tracking methods. With its excellent tracking effect, most of the contemporary guidance tracking methods are evolved from the proportional guidance method. Although in most scenarios, the traditional proportional guidance method has the advantages of simple implementation, stability and reliability, and good tracking effect. However, in the face of large maneuvering targets or when approaching the target rapidly, it is difficult for the traditional proportional guidance to ensure a stable line of sight, which leads to problems such as excessive instantaneous overload and large misses. For different scenarios and different application requirements, based on the guidance contr...

AI Technical Summary

Problems solved by technology

First, most of the methods can only achieve good results in some scenarios. In practical applications, due to the many changes in the state of the aircraft and the target, these methods are difficult to achieve good results in non-scenario scenarios. , poor versatility

Second, when approaching the target at high speed, the line-of-sight angle rate may be very large, and the current method is difficult to give a suitable acceleration control command in this case, which may eventually lead to deviation from the target

Third, when some intelligent methods solve the problem of moving target tracking, they solve the problem of insufficient intelligence of traditional methods. However, due to the difficulty of training and other reasons, only the method of discrete action space can be used, and continuous action instructions cannot be generated. Its control accuracy is greatly reduced

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