无线传感器网络APIT定位算法研究

Research on Wireless Sensor Network Localization Algorithm APIT

针对无线传感器网络无需测距定位算法中典型的APIT算法在参数设置不同时,定位误差及定位时间差异较大的问题,具体分析并仿真了对定位误差和定位时间影响较大的因素,通过仿真结果分析得出,网络平均连通度和节点个数分别对APIT算法的定位精度及定位时间起主导作用。理论分析与仿真结果表明,在不同监测区域内,在确保APIT算法低能量消耗的基础上,参数优化后的算法有效降低了节点的定位误差。

In view of energy and the cost restriction,and through analyzing the simulation results the conclusion that the average network connectivity and the numbers nodes have great influnence on location precision and positioning time of APIT algorithm respectively.Theoretical analyses and simulation results show that the optimized parameters effectively reduce the node location error at the different monitoring areas based on the low energy sonsumption of APIT algorithm.