论文部分内容阅读
提出一种基于几何学的无线传感器网络(WSN)定位算法。把网络区域中的节点分为锚节点和未知节点,假设在定位空间中有n个锚节点,由于受到几何学的限制,实际可行的锚节点序列是有限的,因此利用一种几何方法判断锚节点间的位置关系,从而选取最优的锚节点序列,能够更精确地确定未知节点的位置,并且分析了待定位节点的邻居锚节点数量对定位精度的影响。仿真结果表明,与已有的APS(Ad-Hoc positioning system)定位算法相比,该算法可有效地降低平均定位误差和提高定位覆盖度。
A geometry-based wireless sensor network (WSN) localization algorithm is proposed. The nodes in the network area are divided into anchor nodes and unknown nodes. Assuming there are n anchor nodes in the positioning space, due to the limitation of geometry, the practical sequence of anchor nodes is limited. Therefore, a geometric method is used to judge the anchor So as to select the optimal anchor node sequence, the location of the unknown node can be more accurately determined, and the influence of the number of anchor nodes to be located on the positioning accuracy is analyzed. The simulation results show that compared with the existing positioning algorithm of APS (Ad-Hoc positioning system), this algorithm can effectively reduce the average positioning error and improve the positioning coverage.