摘要
为了减小距离向量-跳段(DV-hop)算法中计算平均跳距时所造成的误差对定位的影响,提出一种基于测距信息的改进DV-hop算法。改进算法充分考虑DV-hop算法中信标节点计算平均跳距误差较大这一因素,将接收的信号强度指示(RSSI)算法中测得信号强度值转化为距离信息,再将距离信息引入DV-hop算法平均跳距的计算中,并在不同信号传播模型下进行仿真分析。仿真结果表明,在同一信号传播模型下,改进算法比原DV-hop算法有着更小的定位误差。
In order to reduce the effect on positioning from the average hop distance error calculated by the DV-hop algorithm,a kind of improved DV-hop algorithm based on RSSI ranging is proposed.Considering the effect of beacon nodes while calculating the average hop distance in DV-hop,the improved algorithm can transform the measured signal intensity values into the distance information from RSSI algorithm ranging.Simulations are carried out in different transmission models and results show that the improved algorithm has smaller location error than the original algorithm in the same transmission model.
出处
《西安邮电大学学报》
2014年第3期11-14,共4页
Journal of Xi’an University of Posts and Telecommunications
基金
国家自然科学基金资助项目(61202490)
陕西省教育厅科学研究计划基金资助项目(11JK1013)
