改进的无线传感器节点定位算法

Research on Improved Wireless Sensor Node Localization Algorithm

由于无线传感器网络具有其它网络不可比拟的各种优势,使得它在很多领域都有广泛的应用。对于无线传感器网络中的未知节点本身的定位工作是网络的各项应用的基础。本文主要分析无线传感器网络的节点定位技术,研究已有的定位算法,并根据现有算法提出一种改进的分布式的节点定位算法。该算法使用RSSI方法测距,无需增加新的硬件设备,通过分布式的算法来提高效率降低能耗,利用多次定位的平均值提高定位精度,降低了网络中的能量消耗,延长网络寿命。

As the wireless sensor network has incomparable advantages than any other network,it has a wide range of applications in many felds.It is the basic work for other applications to localization unknown sensor node of wireless sensor network.This paper analyzes the localization technology in wireless sensor networks and researches on the existing localization algorithm,proposes an improved distributed localization algorithm based on an existing algorithm.The algorithm uses the RSSI measuring distance without adding other hardware.And it improves effciency and reduces power consumption through a distributed algorithm.And it improves localization accuracy through the average of multiple localizations.This localization algorithm reduces the energy consumption of network and extends the network life.