Research of Wireless Sensor Network Data Fusion Technology Based on RMSMTV

At present, the existing trust protocols and models in the trust mechanism of the wireless sensor network have several problems such as one-sided reputation assessment, avoidless malicious evaluation from the nodes, and overfull subjective factors in the evaluation process. In order to solve these problems, a Reputation Model based on Similarity Measure of Trust Value in wireless sensor networks(RMSMTV) is presented. In this model, neighbor nodes of the target node are fully considered, and the reputation assessments of each node are collected, thus the objectivity and accuracy of the reputation assessment result are insured. Further more, in regard to the problems that the controlled nodes, especially excellent reputaion nodes, lunch attacks, RMSMTV uses fuzzy similarity theory to measure the commendatory reliability of the nodes' trust value, identify the abnormal trust value and cut down the authority. As a result, the attacks can be suppressed effectively, and the syncretic outcome will be more accurate.