基于DV-Distance的无线传感器网络定位算法研究

DV-Distance Localization Algorithm for Wireless Sensor Networks

无线传感器网络是一种全新的信息获取和处理技术,而节点自定位技术是无线传感器网络的主要支撑技术之一.由于无线传感器的节点数量非常大,致使利用GPS定位装置收集节点位置信息的代价将会很大.因此,研究能够适应无线传感器网络节点位置信息的算法是极其重要的.本文重点对距离无关的定位算法中的DV-Distance算法进行了研究,通过MATLAB软件平台对DV-Distance算法进行了仿真实现,结果表明不同信标节点密度时,定位算法的定位误差不同,而当存在障碍物及GPS误差也会影响定位误差.

Wireless sensor network is a brand new technology for information retrieval and processing,while node self-localization technology is one of the main supportive technologies of wireless sensor network. As node quantity of wireless sensor is quite big, the cost to collect position information of nodes by GPS localization device is quite expensive. Therefore, the research on arithmetic that is suitable for position information of nodes of wireless sensor network is extremely important. The article focused on researching DV-Distance arithmetic in location algorithm of distance-free and simulation realization of DV-Distance arithmetic was achieved through MATLAB software. The result showed that different beacon node density would have different position error to localization algorithm, while the existing obstacle and GPS error would also affect localization error.