Weight-modifying variable structure multi-model maneuvering object tracking method

A maneuvering target tracking and maneuvering target technology, which is applied in the fields of variable structure multi-model maneuvering target tracking and high-speed maneuvering target tracking, and can solve the problems of poor tracking performance of IMM algorithm, complicated model set addition and deletion rules, and changes in influence weights, etc. , to achieve the effect of reducing computational complexity, stable weights, and simple computation

Active Publication Date: 2016-09-21
XIDIAN UNIV
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Problems solved by technology

However, the prior probability and transition matrix in the IMM algorithm are artificially set, which greatly affects the change of weights, and the interaction between multiple models requires a huge amount of calculation when there are many models.
[0004] In addition, because each model in the IMM algorithm is fixed, if the set models do not conform to the actual motion model, the tr

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  • Weight-modifying variable structure multi-model maneuvering object tracking method
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  • Weight-modifying variable structure multi-model maneuvering object tracking method

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[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] An improved weight variable structure multi-model maneuvering target tracking method, refer to figure 1 , The method includes the following steps:

[0026] Initialize the motion state of the maneuvering target:

[0027] Step 1. Obtain the position detection value of the radar maneuvering target, sample the position detection value N times to obtain the observation value sequence, and determine the 0th time state vector and the 0th tim...

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Abstract

The invention belongs to the field of maneuvering object tracking, and discloses a weight-modifying variable structure multi-model maneuvering object tracking method. The method comprises the steps: initializing a radar observation value, and obtaining an initial state vector and an initial covariance matrix; selecting an initial angular velocity, and determining a state transition matrix of a motion model; carrying out multi-model filtering, obtaining a state estimation vector and an estimation covariance matrix, and obtaining multi-model weights; employing a variable structure and the idea of the graph theory, and carrying out the adjustment of the angular velocity (the multi-model structure) through the multi-model weights till the tracking is completed. The method is good in tracking performance, is small in calculation amount, and can be used for the tracking of a high-speed strong maneuvering target.

Description

technical field [0001] The invention relates to the field of maneuvering target tracking, in particular to a variable-structure multi-model maneuvering target tracking method with improved weight, which can be used for tracking high-speed maneuvering targets. Background technique [0002] Due to the important value of target tracking in various fields of national defense and civilian use, many scholars have been working on the research of target tracking algorithms. With the rapid development of modern aviation, the maneuverability and movement speed of various aircraft are getting higher and higher. It is difficult for the single-model algorithm to meet the requirements of tracking speed and accuracy. The inaccuracy of the model can improve the performance of maneuvering target tracking, so as to realize the precise tracking of strong maneuvering targets. [0003] However, the adaptive change of the weight of each model in the multi-model is a difficult point. At present, ...

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Application Information

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IPC IPC(8): G01S13/72
CPCG01S13/72
Inventor 曹运合闫浩栾苏珍彭志刚周生华吴文华
Owner XIDIAN UNIV
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