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A Robust DS Combination Method Based on Evidence Correction and Conflict Redistribution

机译:一种基于证据纠正和冲突再分配的强大的DS组合方法

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摘要

To eliminate potential evidence conflicts, an effective and accurate DS combination method is addressed in this paper. DS evidence theory is an outstanding information fusion approach with valid uncertainty treatment. Nevertheless, there are some limitations of the usage of the DS evidence theory. On the one hand, due to the complexity of a combat measurement environment and the inconsistency of sensor capabilities, sensor sources have enormous uncertainty, which would inevitably cause conflicts for evidence combination. On the other hand, DS combination rule realizes the unity property of fusing results with a compulsive normalization, which unavoidably leads to conflicting situations. To solve the possible evidence conflicts in a multisensor fusion system, we raise a robust DS combination method based on evidence correction and conflict redistribution. Firstly, two corrected indexes—the reliability index and consistency index—are separately addressed with the introduction of the Matusita distance function and closeness degree function. After the evidence modification based on two correction indexes, the conflicts caused by unreliable sensor sources are solved. Then, based on the corrected evidences, we put forward a weighted assignment of conflicting mass where the weight index lies on the evidence credibility. As the normalization step is abolished, the conflict redistribution strategy avoids the conflicts caused by straightforward normalization. Through comprehensive conflict management, the proposed DS combination method can not only guarantee the rationality and availability of fusing results, but also enhance the reliability and robustness of a multisensor system. Finally, three combination experiments with different conflicting degrees illustrate the advantage and superiority of the novel combination method for conflict management. Consequently, the innovation of the novel algorithm is verified.
机译:为了消除潜在的证据冲突,本文解决了有效和准确的DS组合方法。 DS证据理论是一个具有有效不确定性治疗的卓越信息融合方法。然而,DS证据理论的使用情况存在一些局限性。一方面,由于作战测量环境的复杂性和传感器能力的不一致,传感器源具有巨大的不确定性,这将不可避免地导致了证据组合的冲突。另一方面,DS组合规则实现了融合结果的统一性,强迫标准化,不可避免地导致相互冲突的情况。为了解决多传感器融合系统中可能的证据冲突,我们基于证据纠正和冲突再分配提高了强大的DS组合方法。首先,通过引入Matusita距离功能和近度度函数,分别解决了两个校正索引 - 可靠性指数和一致性索引。在基于两个校正索引的证据修改之后,解决了不可靠的传感器源引起的冲突。然后,根据纠正的证据,我们提出了相互矛盾的群体的加权分配,其中重量指数在于证据可信度。随着标准化步骤废除,冲突再分配策略避免了直接归一化引起的冲突。通过全面的冲突管理,所提出的DS组合方法不仅可以保证融合结果的合理性和可用性,而且还提高了多传感器系统的可靠性和鲁棒性。最后,具有不同冲突程度的三个组合实验说明了新颖的冲突管理方法的优势和优越性。因此,验证了新颖算法的创新。

著录项

  • 作者

    Fang Ye; Jie Chen; Yuan Tian;

  • 作者单位
  • 年度 2018
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
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