摘要
在众多定位技术中,DV-Hop定位算法是应用最广泛的算法之一,它实现简单,对节点硬件要求较低,但该算法使用跳段距离代替实际距离,而平均每跳距离的计算精度受网络的连通度、节点密度等影响。针对DV-Hop定位算法的缺陷,提出修正平均每跳距离和估计距离来提高定位精度的改进算法,并在3种不同的节点分布环境下进行仿真。仿真实验结果表明,改进后的算法定位精度得到了有效的提高。
DV-Hop location algorithm is one of common methods for wireless sensor networks. The demand of node hardware re-quirements of this algorithm is low. But this algorithm uses the hop distance to replace the actual distance, while the average hop distance has the relationship with the network connectivity and the node density. Through analysis on DV-Hop algorithm, this pa-per presets an improved algorithm which fixed the average hop distance and estimated distance to improve the accuracy of node lo-cation. The experiment is finished under three different node distribution environment. Simulation results show that the improved algorithm enchances the nodes localization precision.
出处
《计算机与现代化》
2014年第11期5-8,14,共5页
Computer and Modernization
