关键词: 无线传感器网络;DV-Hop定位算法;信标节点;加权算法

Abstract:

DV-Hop is one of the most common used localization algorithms in range-free algorithms.This algorithm uses the hop distance instead of the actual distance,resulting in localization errors and large energy consumption.The weight assigned DV-Hop algorithm is analyzed,and a new algorithm based on the density of the nodes is proposed.This new algorithm corrects the average hop distance which depends on the neighbor nodes.The simulation shows that the  algorithm improves the precision by 5.3% and reduces energy consumption by 20.7%.

Key words: wireless sensor network;DV-Hop;beacon node;weight assigned algorithm