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Multi-source information fusion method oriented to conflict evidence

A technology of multi-source information fusion and conflict evidence, which is applied in the direction of instruments, calculations, character and pattern recognition, etc., can solve the problems of high conflict of evidence, and achieve the effect of solving influence and accurate fusion results

Pending Publication Date: 2022-05-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in actual situations, due to the failure of the sensor itself or the interference of external factors, the evidence corresponding to different sensor signals is highly conflicting. When the D-S evidence theory is used to fuse conflicting evidence, target recognition results that are contrary to common sense will be produced.

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  • Multi-source information fusion method oriented to conflict evidence
  • Multi-source information fusion method oriented to conflict evidence
  • Multi-source information fusion method oriented to conflict evidence

Examples

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Embodiment 1

[0056] like figure 1 Shown; A kind of conflict evidence-oriented multi-source information fusion method of the present invention comprises the following steps:

[0057] Step 1: Determination of the recognition framework:

[0058] The embodiment identifies the failure mode of the artillery anti-recoil device with 5 different sensors, and the recognition framework is Θ={θ 1 : Leakage, θ 2 : Leakage, θ 3 :part wear};

[0059] Step 2: Determine the base probability assignment for each evidence:

[0060] The basic probability distribution values ​​of different subsets of evidence corresponding to the information measured by the five sensors are shown in Table 1:

[0061] Table 1 Basic probability assignment values ​​of different evidences

[0062]

[0063] In Table 1, evidence m 1 , m 2 , m 4 , m 5 Both support the identification target as "leakage", and the evidence m 3 Supporting the identification of targets as "air leaks", compared with other evidence, the evidence ...

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Abstract

The invention relates to a conflict evidence-oriented multi-source information fusion method, and belongs to the technical field of target identification. The invention discloses a conflict evidence-oriented multi-source information fusion method. The method specifically comprises the following steps of (1) determining an identification framework of target identification; (2) obtaining a basic probability distribution function of the corresponding evidence according to sensor measurement information; (3) obtaining the rejection degree of each evidence to other evidences based on a weighting thought, allocating a weight to each evidence based on the rejection degree, and further obtaining a new evidence obtained by weighting and averaging all the evidences after the weights are allocated; (4) fusing based on the obtained new evidence by applying a D-S evidence theory to obtain a final fusion result; and (5) completing an identification task of the target object according to a decision criterion. According to the method, the importance degrees of different evidences are considered, weights are re-allocated to the different evidences, the fusion result is more accurate, and the influence of conflict evidences on the fusion result is effectively solved.

Description

technical field [0001] The invention relates to a conflict evidence-oriented multi-source information fusion method, which belongs to the technical field of target recognition. Background technique [0002] Target recognition technology fuses the multi-source information collected by multiple sensors through a specific method, and then determines the specific identity of the target according to the fusion results and decision-making criteria. Dempester-Shafer (D-S) evidence theory is widely used as an analysis method of multi-source information fusion because of its good theoretical basis and strict combination rules. The D-S evidence theory is a method of uncertainty reasoning and a generalization method of the probability theory. The D-S evidence theory expands the basic element space in the probability theory to the power set space of the basic elements, and constructs its basic probability distribution function to overcome the traditional probability. It is difficult to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/257G06F18/25
Inventor 魏剑峰张发平卢继平杨向飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY