基于改进的DV-Hop算法的无线传感器网络的研究

Research of a Modified DV-Hop Algorithm of WSN

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的缺点,提出的一种改进的DV-Hop算法,这种算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、改善了网络覆盖率,达到了预期的目标。

This paper apply a new modified DV--Hop algorithm to deal with. the ill--natured nodes produced by the primary DV--Hop nodes localization algorithms and the weakness of accumulated error brought by the multi--level jumps. The algorithm helps to lower the hardware overhead so as to fix an accurate position. Improve the algorithm of positioning. Showed the positioning error rate is decreased. It checks the errors of the node localization by simulation verification through the MATLAB software, which also proves that the algorithm it self is stable and reliable, easily to carry out. Improved positioning accuracy, improved network coverage, achieve the expected goal.