﻿ 基于信息融合的舰船装备技术状态评估
 舰船科学技术  2022, Vol. 44 Issue (8): 178-181    DOI: 10.3404/j.issn.1672-7649.2022.08.038 PDF

Research on equipment technical status evaluation based on information fusion
ZHAO Jun, XU Sun-qing
No.92493 Unit of PLA, Huludao 125000, China
Abstract: In order to accurately grasp the technical status of the warship equipment, it is necessary to evaluate the technical status of the warship. However, the current research on the technical status evaluation of the warship equipment is not perfect. The current evaluation method cannot completely and accurately reflect the real situation of the equipment, and there are some deficiencies and limitations. The technical status evaluation of warship equipment has its own characteristics and difficulties, and the large uncertainty in the evaluation process. Among many evaluation methods, the D-S evidence theory is able to fuse multi-source evidence and deal with uncertainty caused by ignorance. Therefore, in view of the complexity and uncertainty of the technical state evaluation of warship equipment, this paper presents a research on the evaluation method of technical status of warship equipment based on D-S evidence theory, to accurately grasp the technical status of warship equipment.
Key words: information fusion     evidence theory     technical status evaluation
0 引　言

1 D-S证据理论的基本概念

D-S证据理论[8]属于非精确的推理方法，它是用来处理不确定信息的一种主要方法。在多指标的信息融合、不确定信息处理等领域，它是一种非常行之有效的理论，和贝叶斯理论、马尔科夫模型、物元理论、模糊评判法等方法相比，其最大优势在于不需要提供先验信息。

1.1 识别框架

 $\varTheta \text=\left\{{\theta }_{1}\text{，}{\theta }_{2},\cdot \cdot \cdot \text{，}{\theta }_{j},\cdot \cdot \cdot ,{\theta }_{n}\right\}，$ (1)

1.2 基本概率分配函数

 $m(\varphi ) = 0 ，$ (2)
 $\sum\limits_{A \subset \Theta } {m(A)} = 1 。$ (3)

 $Bel(A) = \sum\limits_{B \subset A} {m(B)} \begin{array}{*{20}{c}} {}&{(\forall A \subset \varTheta )} 。\end{array}$ (4)
1.3 合成规则

 $\sum\limits_{{A_i} \cap {B_j} = \varphi } {{m_1}({A_i}){m_2}({B_j})}< 1 ，$ (5)

 $m(A) = \left\{ {\begin{array}{*{20}{c}} 0&{A = \varphi } ，\\ {\frac{{\displaystyle\sum\limits_{{A_i} \cap {B_j} = A} {{m_1}({A_i}){m_2}({B_j})} }}{{1 - k}}}&{A \ne \varphi } 。\end{array}} \right.$ (6)

2 装备技术状态评估流程

 图 1 基于证据理论的装备技术状态评估流程 Fig. 1 Equipment technology condition evaluation process based on evidence theory

2.1 识别框架的构建

2.2 舰船装备技术状态评估指标选取

2.3 基本可信度函数的构建

2.4 证据的合成

2.5 综合决策

3 案例应用

4 结　语

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