基于RSSI参数相消的干扰源定位算法  

Jammer Localization Algorithm Based on RSSI Parameters Cancellation

作　　者：张飞[1] 吕伟杰[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《仪表技术与传感器》2017年第8期117-121,共5页Instrument Technique and Sensor

摘　　要：针对无线传感器网络易受干扰攻击而导致网络通信受阻甚至瘫痪等问题,为确定干扰源位置进而消除干扰、保障网络正常通信,提出了接收信号强度指示(RSSI)参数可相消定位算法。利用参与定位的3对候选节点,先利用信号传播模型通过未知参数相消计算出不同节点距离干扰源的距离之比,再利用几何知识定位干扰源的位置。该算法利用测距模型和几何模型相结合,来达到更好的定位目的。仿真实验证明,该算法在不同网络环境下定位效果均优于CL、WCL定位算法。According to the problem wireless sensor networks is susceptible to jamming attacks, which can make the network communication blocked or even palsied. In order to localize the position of the jammer and then eliminate it to guarantee the nor- real communication, a novel positioning algorithm of RSSI with parameters cancellation was proposed. Three pairs of candidate node were used and signal propagation model was used to calculate the ratio of the distance between the different nodes and the interference source.Then, geometric knowledge was used to locate interference sources.This algorithm combined the measuring distance model and geometric model to achieve better positioning purposes. Simulation shows that the algorithm under the different network environments outperforms CL,WCL algorithms.

关 键 词：无线传感器网络 定位 参数相消 接收信号强度指示 几何 

分 类 号：TH878[机械工程—仪器科学与技术]