中文摘要：

为了提高无需测距的距离矢量（DV-Hop）定位算法对随机分布网络节点的定位精度。在分析了DV-Hop算法实现思想的基础上,提出了一种锚节点整体均匀分布优化方案,对该算法节点跳数进行优化。另一方面,在双通信半径算法基础上提出了一种三通信半径改进方法,使得两节点之间的跳数与距离的关系更接近线性规律,最后结合两种改进方法,进行整体仿真。仿真结果表明,锚节点均匀分布的三通信半径DV-Hop算法比双通信半径DV-Hop算法提高定位精度约为7%~8%。

英文摘要：

In order to increase the accuracy of distance vector（ DV-Hop） localization algorithm for random distribution node positioning,based on the analysis of the DV-Hop algorithm,a uniform distribution of anchor nodes to optimize the overall scheme of the algorithm to optimize the number of hops is proposed. On the other hand,based on the dual communication radius algorithm,this paper presents an improved triple communication radius methods,making the relationship of the number of hops and the distance between two nodes closer to a linear law,and do simulation combine two methods. Simulation results show that the positioning accuracy of the anchor nodes uniformly distributed triple communication radius DV-Hop algorithm versus double communication radius DV-Hop algorithm improves about 7% to 8%.