一种基于改进跳数和平均跳距的DV-Hop定位算法

DV-Hop Localization Algorithm Based on Improved Hops and Average Hop Distance

针对传统的DV-Hop定位算法在跳数计算及估计距离上可能产生较大误差的问题,提出了一种改进的DV-Hop算法。改进的算法中同时采用了节点跳数加权和平均跳距修正的方法,即将节点间跳数与距离相关联,并利用平均跳距误差对每跳的距离值进行修正。仿真结果表明,本改进算法可在不增加网络通信量及复杂度的情况下显著提高节点的定位精度。

Aiming at jump number calculation and the estimated distance to produce large errors brought about by the conventional DV-Hop localization algorithm, an improved DV-Hop algorithm was proposed. This improved algorithm uses the node hops-weighted and average jumped form of amendment, namely, hop count being associated with the distance between nodes, and an average distance value from a jump is used for correction of errors on every jump. Simulation results show that this algorithm can be used without additional nelwork traffic volume and complexity of cases, significantly highlights the positioning accuracy of the node.