针对经典DV-hop算法在估计跳数时所引起的定位误差,提出了基于覆盖比例的定位算法.根据两节点间的通信覆盖率引入跳数系数,降低了每跳距离产生的误差,精确未知节点距参考节点的位置.仿真结果表明,改进的算法能使节点的定位精确度提高,使误差比原始算法降低10%左右. Aiming at the positioning error caused by classical DV-hop algorithm when estimating the hop count, a positioning algorithm based on coverage ratio is proposed, which introduces the hop coefficient according to the communication coverage between two nodes, and reduces the error caused by the distance per hop. The position of the node from the reference node.The simulation results show that the improved algorithm can improve the positioning accuracy of the node and reduce the error by about 10% compared with the original algorithm.