基于声誉机制的传感器网络节点安全定位算法

摘要

A new localization algorithm based on reputation mechanism was proposed to improve the robustness of the node positioning system in Wireless Sensor Network (WSN). This algorithm introduced a monitoring mechanism and reputation model to filter out malicious beacon nodes giving the false location information, used Beta distribution to update and integrate the reputation of the beacon nodes. Through the cluster head node, the proposed algorithm collected and judged which beacon nodes were reliable, increased the malicious beacon nodes detection rates while the positioning error was reduced. Finally, the simulation and detailed analysis prove its efficiency and robustness. The algorithm is efficient in self-positioning of sensor nodes in distributed WSN, and the localization accuracy and security are greatly improved.%针对传感器网络中的节点安全定位问题,提出一种基于声誉机制的安全定位算法.算法引入信标节点的相互监督机制,使用Beta分布来表示更新和整合信标节点的声誉值,通过簇头节点来收集并判断哪些信标节点是信誉值高的可信节点,并应用声誉模型来排除提供错误定位信息的恶意信标节点,提高了恶意信标节点的检测率,减少了定位误差,提高了定位系统的鲁棒性；通过仿真实验详细分析了定位算法的有效性和鲁棒性,所提算法适用于分布式传感器网络节点实现自身定位,且在定位精确性和安全性方面都有很大提升.