无线传感器网络节点定位加权校正模型

摘要

In order to reduce the influence of positioning accuracy casued by the issue of localization algorithm itself and the Received Signal Strength Indicator ( RSSI), through introducing the correction mechanism in the previous localization algorithm, such as Gauss-Markov mobility model, and combining the technology of mobile anchor with fixed anchor, a new method was proposed based on weighted correction model. The simulation results show that the precision of node localization is effectively improved, meanwhile, compared with the Gauss-Markov mobility model, the positioning accuracy of the proposed method increases by 36.2%.%为了降低定位算法本身和接收信号强度指示(RSSI)所产生的误差对定位精度的影响,在以往的定位算法(如利用高斯-马尔可夫模型定位)中加入校正机制,并将移动锚节点和固定锚节点定位技术相结合,提出了一种基于加权的校正模型和算法.仿真结果表明,采用加权校正模型有效地提高了节点定位精度,与采用高斯-马尔可夫模型定位相比较,定位精度提高了36.2％.