Jerk model-based jump gliding trajectory target tracking method and system

Abstract

The invention belongs to the technical field of target tracking, and particularly relates to a jumping gliding trajectory target tracking method and system based on a Jerk model, and the method comprises the steps: building a maneuvering target tracking model based on the Jerk model; using deviation of position estimation to represent jerk disturbance quantity and obtain jerk variance representation, and performing positive correlation on jerk variance and jerk frequency to obtain jerk frequency representation; according to the obtained jerk variance representation and jerk frequency representation, parameters of the maneuvering target tracking model are set, and a process noise covariance matrix in the target tracking process of the maneuvering target tracking model is obtained; and obtaining a target state equation and an observation equation according to the maneuvering target tracking model and the radar observation model, and carrying out jump gliding trajectory target tracking based on the target state equation and the observation equation. According to the method, adaptive adjustment setting is performed on maneuvering target tracking model parameters through the deviation of position estimation, so that the convergence speed of motion state estimation is higher, tracking errors caused by unreasonable parameter setting are effectively avoided, and the tracking effect is improved.

Description

technical field [0001] The invention belongs to the technical field of target tracking in the high-end equipment manufacturing industry, and particularly relates to a method and a system for tracking a jump gliding ballistic target based on a Jerk model. Background technique [0002] The ballistics of hypersonic gliding vehicles in the gliding segment mainly include balance gliding and jump gliding. The flight trajectory of the balanced gliding trajectory is smooth, and generally there is no maneuvering to change the trajectory, but its requirements for the control amount of the angle of attack are stricter, and the engineering realization is relatively difficult. However, the flight trajectory of the jump glide ballistic is not fixed, and the trajectory can be maneuvered many times during the flight, and the ballistic trajectory is difficult to predict, which greatly enhances the evasion ability and penetration ability. At the same time, the jump glide trajectory has low r...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of radar jump-gliding ballistic tracking, the present invention provides a Jerk model-based jump-gliding ballistic target tracking method and system, through which the deviation of position estimation is used to adaptively adjust and set the parameters of the maneuvering target tracking model, so that the motion state estimation convergence speed Faster, effectively avoid the tracking error caused by unreasonable parameter settings, improve the tracking effect, and facilitate the application in actual scenarios

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