基于改进D-S证据理论的海上信息融合方法

Maritime Situation Assessment Based on Improved D-S Evidence Theory

针对经典D-S证据理论在实际海上态势分析中对高冲突的证据融合结果准确性较低的问题,提出一种改进D-S证据理论的数据融合方法。通过基于万有引力定律的证据距离公式来衡量证据之间的冲突程度,将冲突较大的融合结果赋予较小的权重,并通过海上武器识别案例进行融合。结果表明,该方法证据冲突越明显,优势越大;证据之间冲突较小时,其融合结果和经典D-S证据理论一致,并具有更高的准确度和稳定性。

Aiming at the problem that the accuracy of the fusion results of high conflict evidence in the classic D-S evidence theory is low in actual maritime situation analysis,a data fusion method to improve the D-S evidence theory is proposed.The evidence distance formula based on the law of universal gravitation is used to measure the degree of conflict between evidences,and the fusion results with larger conflicts are given a smaller weight,and the fusion is carried out through the identification of maritime weapons.The results show that the more obvious the evidence conflicts of this method,the greater the advantage;when the conflicts between the evidences are small,the fusion results are consistent with the classic D-S evidence theory,and have higher accuracy and stability.