摘要
信息融合是解决无线传感器网络能量和通信带宽受限的有效途径,提出了一种无线传感器网络信息时间和空间多级混合融合的结构模型。首先对距离汇聚节点较远的节点信息进行时间融合和对距离汇聚节点较近的节点信息在汇聚节点进行时空融合,然后在汇聚节点对两种节点的融合结果进行全网络的空间融合。就该模型提出了基于DS证据理论的多级时空融合算法。数据分析结果表明:该模型能够降低节点能耗,延长网络寿命。
Information fusion is an effective way to solve the problem of the limitation of energy and bandwidth of wireless sensor networks（WSNs）.A multi-stage mixed spatio-temporal architecture model for wireless sensor networks information fusion is presented.In this architecture,the data that is monitored by the nodes far from the Sink node is fused in time.The data that is monitored by the nodes close to the Sink node is fused in time and spatial on Sink node.The fusion results of two kinds of nodes is fused in space for the overall network on Sink node.Under this model,a multi-stage fusion algorithm is given based on the theory of DS evidence.The data analysis shows that the method can reduce power consumption of node and prolong the network lifetime.
出处
《传感器与微系统》
CSCD
北大核心
2012年第4期43-46,共4页
Transducer and Microsystem Technologies
基金
国家重大科技专项基金资助项目(2011ZX03005-006
2010ZX03006-004)
关键词
无线传感器网络
多级融合
证据理论
wireless sensor networks（WSNs）
multi-stage fusion
evidence theory
