传感器网络中基于节点协作的安全定位算法  

Safety Localization Algorithm Based on Node Cooperation in Sensor Networks

作　　者：王帅[1] 

机构地区：[1]煤炭科学研究总院抚顺分院,抚顺113001

出　　处：《中国新通信》2008年第19期28-32,共5页China New Telecommunications

摘　　要：本文针对传感器网络(SN)面临的主要安全威胁,结合节点计算、存储、通信能力限制,提出一种基于节点协作的SN安全定位算法(节点协作安全定位,NCSL)。该算法以提高SN位置信息的安全性为设计目标,利用节点协作形成协作天线阵列进行相互通信和定位,在不增加额外硬件成本的同时,获得了阵列信号处理技术给SN带来的诸多优势,如减小多径效应、提高接收端的信噪比、增加系统容量和减小发射功率等。仿真结果表明,波达角(DOA)估计精度较高时,基于协作阵列结构NCSL算法能够得到较好的定位性能,并且通过提出的恶意攻击判断规则,使网络对常见恶意攻击具有更好的抵御能力,特别是对虫孔、女巫和泛洪攻击具有非常好的抵御性能。Aim for safety threats faced by sensor networks, nodes limitations of computation, memory and communication , innate characteristics of narrow and low bandwidth, large propagation latency and high error rate, a safety location algorithm（NCSL） based on array transmitted configurable for SN is presented in this paper. The algorithm takes energy optimization, improvements of SN safety, particularly, location information safety as its design targets. It uses node cooperation formative array as dummy antennae array to communicate and gains arraying antenna advantage for SN without increasing extra hardware cost, such as reducing multi-path effects, increasing receivers signal to noise ratio and system capability, reducing transmitting power, and so on. It has good ability to resist wormhole attack. Simulations show that this algorithm is efficient.

关 键 词：传感器网络 安全定位算法 天线阵列 通信 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]