摘要
研究节点定位技术是传感器网络中的一个重要课题。针对DV-Hop定位算法适应节点均匀分布的网络这一特性,为了减小DV-Hop定位算法的定位误差,提出了节点的部署策略;针对平均每跳距离在求不同跳数的节点之间的距离时有着不同程度的影响,为了提高待定位节点的定位精度,提出了距离修正值策略。经过以上处理之后,得到了更加准确的平均每跳距离的估计值。实验表明,改进后的算法不仅提高了定位精度,同时也改善了定位的稳定性。
Localization technology in sensor network is an important problem for researchers.In this paper,a node deployment strategy is proposed to reduce the localization error of DV-Hop algorithm in the network where nodes are uniformly distributed.And a distance correction strategy is also presented to improve the localization accuracy of the node since the average hop distance has different influence on the distance computation between hops.Through the above procedure,the average hop distance could be estimated more accurately.The experiment results indicate that the proposed algorithm could increase the location accuracy and improve the stability of localization error.
出处
《通信技术》
2011年第4期93-96,共4页
Communications Technology
