研究了基于D-S证据理论的多传感器决策层信息融合的实现方法和算法，探讨了将Dempster联合规则推广到多源信息时取消中间联合过程的归一化计算问题，推导出了改进算式。应用于无损检测，用超声波等三种传感器对一铸件进行无损检测仿真实验，结果证明能够提高检测速度与检测精度。In this paper, the method and algorithm of multi-sensor decision-making level based on D-S evidence theory are researched in the light of basic theory knowledge of the multi-sensor information fusion, and the detailed formulations are reasoned without middle normalizing unity calculation with extending Dempster rule to multi-source information, which can reduce the calculation quantity. When this method is used to the nondestructive testing experiment that three kinds of sensors detects a casting, the result has proved this improved algorithm can improve detection precision and speed.
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