Study on An Algorithm of Trusted Data Fusion Oriented on WSNs
With the widely application of WSNs,its security problems are gradually exposed,and the defense system of traditional network security has been unable to provide security protection for WSNs. Trust model as an important supplement to the defense system of network security,and to some extent,it can solve the security problem in WSNs. In this paper,based on the current situation of WSNs,the related security problems of WSNs is researched,and the threats of WSNs' operation and data fusion are analyzed;Taking into account the nodes have the fuzzy characteristics of randomness and uncertainty in WSNs,and the fuzzy trust model based on WSNs is researched and proposed by using fuzzy theory;Based on the fuzzy trust model,as the goal of improving the credibility and effectiveness of data fusion in WSNs,taking into account the computing ability and energy constraints and other factors,the trusted data fusion algorithm is researched and proposed based on fuzzy trust;Simulation results show the fuzzy trust model based WSNs and the trusted data fusion algorithms based on fuzzy trust can accurately evaluate whether the data of node is the credibility,and to make the results of the nodes' data fusion more accurate,which also provides a feasible scheme of data fusion in WSNs.