一种改进的DV-HOP算法在无线传感网中的定位研究

Research on Positioning of an Improved DV-HOP Algorithm in Wireless Sensor Networks

摘要:

WSN中的信息传递主要通过传感器来进行传递信号,针对无线传感中DV-Hop算法在节点定位上存在精度低的问题,首先提出建立双曲线二维模型用来确定锚节点与未知节点的距离关系,其次设定误差系数使得传感器节点之间的误差降低,最后采用斯蒂芬森迭代法(Steffensen)定位方法对传感器节点进一步进行定位修正；仿真实验表明算法的在远程控制的中定位精度提高,传感器之间能量消耗降低,具有一定的推广价值。

Abstract:

In information transfer in WSN, signals are transferred mainly through the sensor. Aiming at the low accuracy of DV-Hop algorithm in node positioning in wireless sensor, this paper first proposes establishing hyperbolic two-dimensional model to determine the distance between anchor nodes and unknown nodes. Then, set the error coefficient to reduce errors between nodes of the sensor. Finally, Steffensen positioning method is used to modify the positioning of sensor’s nodes. Simulation experiment shows that algorithm in this paper improves the positioning accuracy in remote control, and energy consumption between sensors is reduced, so it has certain promotion value.