摘要
针对煤矿井下巷道狭长,传感器节点分布不均匀,环境恶劣,井下人员定位不明确。传统算法定位精度不高。为此,提出一种改进DV-Hop的煤矿井下节点定位方法,利用无线信号同种介质中传播速度不变性,并利用节点间数据包传送时间对未知节点的估计距离进行修正。实验结果表明,改进算法有效地提高了无线传感器网络节点的定位精度,减少了定位误差,更加适合于类似于煤矿井下场景的定位需求。
Coal mines str long and narrow, and the sensor nodes distribution is not uniform, thererfore, the tradi- tional DV - Hop algorithm positioning accuracy is not high. This paper put forward an underground node localization algorithm based on improved DV - Hop algorithm. The proposed algorithm uses the node packet transmission time to correct the unknown node＇s estimated distance correction for radio signals in the same medium propagation velocity in- variance. The experimental results show that the improved algorithm can effectively improve the wireless sensor net- work node localization accuracy, and reduce the localization error. It is more suitable for the demands of coal mine underground scene localization position.
出处
《计算机仿真》
CSCD
北大核心
2012年第8期123-126,共4页
Computer Simulation
