一种新的无线传感器网络定位算法研究

针对传统无线传感器网络定位算法平均误差大、节点能耗过高、定位精度不够理想等缺陷,提出了一种新的无线传感器网络定位算法IMDV-Hop.该算法引进了局部跳数Si和修正因子δ-i,用修正因子-δi对局部跳数进行修正,使待定位节点到锚节点的平均跳数更加符合实际情况;通过权衡定位精度和能耗,分三种情况计算了平均每跳间距,使得平均每跳间距更接近于真实值.仿真实验结果表明IMDV-Hop算法平均定位误差低,具有较小的通信开销,在非规则网络中可达到较好的定位精度.

Research of a New Localization Algorithm for Wireless Sensor Networks

The traditional wireless sensor network localization algorithm average error is large,energy consumption is too high and positioning accuracy is not ideal,a new localization algorithm for wireless sensor networks IMDV-Hop.The local hops Si and correction factor δ-i are introduced into the algorithm,with the correction factor for local hops amendment to the positioning node to the anchor node to be the average number of hops is more realistic;by weighing accuracy and energy consumption,we calculate the average per-hop distance for three cases,making the average distance per hop is closer to the true value.Simulation results show that the IMDV-Hop algorithm average positioning error is smaller and it has less communication overhead and it could achieve better accuracy in the irregular network.