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Method for tracking high maneuvering target

A high maneuvering target and target technology, applied in the field of high maneuvering target tracking, can solve problems such as mismatch, tracking performance degradation, tracking filter divergence, etc.

Inactive Publication Date: 2012-10-10
XIDIAN UNIV
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Problems solved by technology

The disadvantage of this method is that it is only applicable to the tracking of general maneuvering targets. For high maneuvering targets, since the jerk model assumes that the rate of change of target acceleration is zero mean, this shortcoming will make the target’s movement The model does not match the actual dynamic model of the target, causing the tracking filter to diverge and the tracking performance to degrade

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  • Method for tracking high maneuvering target
  • Method for tracking high maneuvering target
  • Method for tracking high maneuvering target

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Embodiment Construction

[0059] Attached below figure 1 The steps of the present invention are described in further detail.

[0060] Step 1, initialization of motion state and model parameters

[0061] The measurement values ​​of the first three moments of the radar observation are Z(1), Z(2) and Z(3), and the radar observation values ​​Z(1), Z(2) and Z(3) are obtained by the difference method The following formula determines the initial state

[0062] X ^ ( 3 | 3 ) = Z ( 3 ) [ Z ( 3 ) - Z ( 2 ...

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Abstract

The invention discloses a method for tracking a high maneuvering target, and mainly solves the problems of model mismatching and low tracking precision brought by high maneuvering of a target in the prior art. The method comprises the following steps of: (1) initializing motion states and model parameters; (2) establishing an improved jerk model; (3) forecasting a state of a target; (4) solving a forecast error of an observed value according to receiving data and a state forecast value of radar; (5) determining a fading factor; (6) determining filter gain; and (7) updating the state of the target, and thus realizing target tracking. By the method, the tracking precision of a general maneuvering target is kept, and the tracking performance during sudden change of the state of the target is improved; and moreover, the method can be used for tracking a high maneuvering target.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a method for tracking a high maneuvering target in the field of radar technology. The invention can be used to realize the tracking of high-maneuvering targets, and improve the tracking performance when the targets are suddenly maneuvered. Background technique [0002] With the rapid development of modern aerospace technology, the maneuverability of various aircraft has been greatly improved, and the form of maneuver is no longer limited to forms such as acceleration steps and snaking maneuvers, and more complex maneuvers such as step maneuvers of acceleration change rates may also occur . In this context, how to improve the tracking performance of high maneuvering targets has become an increasingly important issue. [0003] The problem of target tracking is actually the problem of tracking and filtering of the target state, that is, to accurately estimate the targ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
Inventor 曹运合樊友友刘宏伟张伦刘峥靳松阳
Owner XIDIAN UNIV
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