摘要
DV-Hop定位算法是一种典型的无需测距定位算法。DV-Hop定位算法在各向同性的密集网络中,可以得到比较合理的定位精度,然而在随机分布的网络中,节点定位误差较大。针对随机传感器网络中节点分布不规则的特点,在传统DV-Hop算法的基础上采用了跳数修正和多变的平均跳距离法两个改进措施,提出了一种改进的DV-Hop定位算法。仿真结果表明,提出的改进算法可大大地提高随机传感器网络中节点的定位精度。
DV-Hop algorithm is a typical range-free localization algorithm. The algorithm can get more reasonable localization accuracy in isotropic density sensor networks. However, it has larger localization errors in randomly distributed networks. According to the characteristics of irregularity of nodal point in random sensor networks,on the.basis of traditional DV-Hop algorithm, this paper adopts two measures ： the amend of hop number and Diversified Average Hopsize. An improved DV-Hop algorithm was put forward. The simulation results show that such improved algo- rithms can greatly enhance the localization accuracy of the unknown nodes in random sensor networks.
出处
《太原科技大学学报》
2011年第2期85-89,共5页
Journal of Taiyuan University of Science and Technology
基金
太原科技大学青年基金(20093017)
