无需测距的综合节点定位算法  

Range-free Synthesized Localization Algorithm Based on WSN

作　　者：吕振[1] 林振杨[1] 张晓红[2] 何武林[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105 [2]辽宁工程技术大学应用技术学院,阜新123009

出　　处：《计算机系统应用》2012年第5期91-95,共5页Computer Systems & Applications

摘　　要：针对基本的DV-Hop节点定位算法会产生不良的节点和多级跳带来的累积误差、定位精度不高以及能量消耗方面等缺点,提出一种改进的综合定位算法,即基于一种无需测距的综合节点定位算法,这种算法能够节省附加节点的硬件开销进而能达到准确的定位。改进以后的算法的定位误差率明显比改进前的定位误差率小,表明了定位误差率随锚节点数量的增加而减小。通过MATLAB软件对节点定位误差方面进行仿真验证,仿真实验结果证明该改进后的算法稳定、可靠,易于实现,提高了定位精确度、降低了能量消耗水平,达到了预期的目标。This paper applies a new modified Synthesized algorithm based on the ill-natured nodes which produced by the primary DV-Hop nodes localization algorithms and the weakness of accumulated error brought by the multi-level jumps.It is that Centroid and DV-Hop Localization Synthesized.The algorithm helps to lower the hardware overhead so as to fix an accurate position.Improve the algorithm of positioning error rate after the positioning before than improved significantly less error rate,showed the positioning error rate increased with anchor the number of node is decreased.It checks the errors of the node localization by simulation verification through the MATLAB software,which also proves that the algorithm itself is stable and reliable,easily to carry out.Improved positioning accuracy reduces the energy congumption level,achieves the expected goal.

关 键 词：无线传感器网络 质心算法 DV-HOP算法 CDLS算法 MATLAB仿真软件 

分 类 号：TN929.5[电子电信—通信与信息系统]