关键词: 无线传感器网络, 数据融合, D-S证据理论, 误差处理, 预处理

Abstract: The recognition results of the same target by different sensors are often contradictory in wireless sensor networks. The use of data fusion based on DempsteShafer (D-S) evidence theory could solve this problem. However, when using D-S evidence combination formula to compute，with the increase of the target identity, the computation will be growing rapidly. The processing ability of sensor nodes is limited and the data of decision in sensor networks are redundant, thus，a way was proposed to reduce the number of target identity by preprocessing and to reduce the computation; and it could rule out the data with errors through greater consistency test; therefore，it makes decision results more accurate.

Key words: Wireless Sensor Network (WSN), data fusion, D-S evidence theory, error processing, preprocessing