Optimal combination of conflict evidence

Dempster-Shafer (D-S) method has been used widely in all kinds of data fusion system, but it has difficulty in dealing with combining evidences with high degree of conflict. In order to solve the problem, an optimal method was proposed. First, a weighted evidence distance function between the weighted bodies of evidence was introduced, and then the concept of global distance was brought forward, and the optimal weight of every evidence body was acquired, accoroling to the principle that the global distance is minimal. Then oweraging weighted evidence in the system, the D-S combination was used to realize information fusion. The simulation result of example testifies that the performance of the proposed approach is better than the existing approaches and more efficient in target recognition.