CAJ | 학술논문

证据理论在时空信息融合领域都有着广泛的应用，时域信息融合表现出明显的序贯性和动态性，在空域进行证据融合时处理证据冲突的方法并不一定适用于时域，时域证据融合中如何确定证据的动态可信度是值得关注的问题。针对此问题，基于 Dempster 证据组合规则和证据折扣理论，分析了时域证据融合的马尔可夫性，建立了证据可信度衰减模型，在此基础上得到证据动态可信度，以此作为动态折扣因子对证据进行折扣。算例仿真表明，可信度衰减模型可以基本满足时域证据融合的要求，能有效处理时域融合中的证据冲突。
증거이론재시공신식융합영역도유착엄범적응용，시역신식융합표현출명현적서관성화동태성，재공역진행증거융합시처리증거충돌적방법병불일정괄용우시역，시역증거융합중여하학정증거적동태가신도시치득관주적문제。침대차문제，기우 Dempster 증거조합규칙화증거절구이론，분석료시역증거융합적마이가부성，건립료증거가신도쇠감모형，재차기출상득도증거동태가신도，이차작위동태절구인자대증거진행절구。산례방진표명，가신도쇠감모형가이기본만족시역증거융합적요구，능유효처리시역융합중적증거충돌。
Evidence theory is widely used in both temporal and spatial domain.Since evidence fusion in time domain is sequential and dynamic,methods of dealing with evidence conflict in space domain may not be suitable in time domain.When belief functions obtained in different time nodes are combined,it is significant to deter-mine the dynamic credibility of evidence in time domain.The Markovian requirement of temporal fusion is ana-lyzed based on the Dempster’s combination rule and the evidence discount theory.And the model of credibility attenuation is established to get the dynamic evidence credibility.Then the evidence is discounted by the dyna-mic discount factor.Numerical examples demonstrate that such a model can satisfy the requirement of data fu-sion in time domain.By managing conflicts between belief functions better,this approach is helpful for making proper and solid decisions.