无线传感器网络中一种改进的DV-Hop定位算法研究

节点定位算法是无线传感器网络中的关键技术。针对DV-Hop定位算法定位精度不高的问题,提出一种改进的DV-Hop定位算法,通过减小全网平均跳距与真实的平均跳距的差距,重新修订不在网络区域的未知节点的坐标,提高平均跳距取值的准确性。仿真结果表明,在同等网络环境下,改进的DV-Hop定位算法的定位误差减小,能有效提高节点的定位精度。

A Modified DV-Hop positioning Algorithm in Wireless Sensor Networks

Node positioning algorithm is a key technology in wireless sensor networks.Aiming at the problem that the positioning accuracy of the DV-Hop positioning algorithm is not high,a modified DV-Hop positioning algorithm is proposed.By reducing the gap between the average hop distance of the entire network and the true average hop distance,the coordinates of unknown nodes not in the network area are revised to improve the accuracy of the average hop distance.Simulation results show that under the same network environment,the positioning error of the modified DV-Hop positioning algorithm is reduced,which can effectively improve the positioning accuracy of nodes.