A disturbing target filtering method of a radar target tracking system based on an alpha-beta filter

A technology of radar target tracking and alpha beta, which is applied in the direction of radio wave measurement system, radio wave reflection/re-radiation, instruments, etc., can solve the problem that the filtering accuracy cannot be guaranteed, and achieve the effect of ensuring the filtering accuracy

Active Publication Date: 2019-02-26
天水华威电子科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the defect in the prior art that the filtering accuracy of the radar tracking unknown target cannot be guaranteed, and provide a radar target tracking system disturbance target filtering method based on the Alpha Beta filter to solve the above problems

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[0068]In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0069] like figure 1 As shown, a kind of radar target tracking system perturbation target filtering method based on Alpha Beta filter of the present invention, comprises the following steps:

[0070] The first step is the setting of the radar target tracking system, which is to pre-set the radar target tracking system. The specific steps are as follows:

[0071] (1) Set the radar target tracking system expression, the expression is as follows:

[0072] x 1 (t+1)=x 1 (t)+Tx 2 (t),

[0073] x 2 (t+1)=ρx 2 (t)+w(t),

[0074] Among them, T represents the sampling period, x 1 (t) and x 2 (t) respectively represent the position and velocity of the moving target of the target at time t, ρ represents the acceleration rate of the tar...

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Abstract

The invention relates to a disturbing target filtering method of a radar target tracking system based on an alpha-beta filter. Compared with the prior art, the invention solves the defect that the filtering accuracy cannot be guaranteed when a radar tracks an unknown target. The method comprises the following steps: setting of a radar target tracking system; establishing of a virtual noise model;estimation calculation; filtering of a self-tuning alpha-beta filter. The method establishes a virtual noise model by using a method for fitting the virtual noise, and the system with parameter disturbance is transformed into a filtering problem with stable unknown parameters and known noise by using the virtual noise instead of disturbance and dynamic noise of the system itself. Therefore, a self-tuning alpha-beta filter is generated, which is used to filter the unknown targets effectively and ensure the filtering accuracy.

Description

technical field [0001] The invention relates to the technical field of radar target tracking, in particular to an alpha beta filter-based disturbance target filtering method for a radar target tracking system. Background technique [0002] The traditional self-tuning α-β filter can effectively solve the filtering problem of the stable unknown parameters of the radar target tracking system, but it is difficult to effectively filter the unknown target with disturbance. In the prior art, some scholars propose to use a performance-guaranteed filter for filtering. The characteristic of this filter is that the upper bound of the disturbance is used to replace the actual parameters. However, although this method can ensure the stability of filtering, the filtering accuracy is poor. [0003] Therefore, how to propose an effective filtering method for unknown targets has become an urgent technical problem to be solved. Contents of the invention [0004] The purpose of the present...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/66G01S7/02
CPCG01S7/02G01S13/66
Inventor 李恒张晨晨李佩君王诗兵刘志远史晓凤尹佳来徐小东周正港张炎炎李啊敏刘飞彪陈佳琪袁冬冬
Owner 天水华威电子科技有限公司
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