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通过对无线传感器网络中节点定位算法,特别是APIT算法的研究,针对由于锚节点(位置已知的节点)个数少,分布稀疏而造成某些未知节点无法进行定位的问题,提出了一种改进的APIT算法。该算法采用嵌套循环的思想,将上一轮中已经定位了的未知节点当作新一轮的锚节点,以进行下一轮的定位,并通过Matlab软件来进行仿真,仿真结果表明,改进的算法能对某些之前无法定位的未知节点进行定位,有一定的改进,具有较普遍的工程意义。
Aiming at the problem that some unknown nodes can not locate due to the small number and sparse distribution of anchor nodes (known nodes), this paper presents a new algorithm for node localization in wireless sensor networks (WSNs), especially the APIT algorithm. Improved APIT algorithm. The algorithm adopts the idea of nested loops and takes the unknown node that has been positioned in the previous round as a new anchor node for the next round of positioning and the simulation is carried out by Matlab software. The simulation results show that the improvement The algorithm can locate some unknown nodes that can not be located before, with some improvements, which have more general engineering significance.