基于一种混合的节点定位算法的研究

Research of a Hybrid Node Localization Algorithm

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以及未知节点的坐标没有进行修正等缺点,提出了一种改进的混合节点定位算法WHDV-Hop算法,改进后的算法定位误差率明显比改进前的定位误差率小,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。与DV-Hop算法相比,定位精确度提高了4.65%,计算量减少,降低了能量消耗水平,实现预期的目标。

According to analysis of the defective code produced by the DV-Hop Node localization algorithm and the accumulative errors brought by the multilevel jump and the disadvantages caused by without updating the coordinates of the unknown nodes,the WHDV-Hop algorithm,an improved mixed node localization algorithm is proposed.The rate of the improved positioning algorithm is smaller than before.Through the simulation experiment for the node location error by the MATLAB software,it proves that the improved algorithm is stable,reliable,and achievable.Compared with DV-Hop algorithm,the positioning accuracy of the improved algorithm increases by to 4.65%,that is,it reduces the amount of calculation and lowers the energy consumption level,which helps to achieve the desired objectives.