Improved Study Based on DV-Hop Localization Algorithm

DV-Hop is a typical range-free localization algorithm for wireless sensor network.Estimably calculating the average hop-distance is one of the most important factors which decide the final localization precision.The average hop-distance estimated only by the nearest anchor node was used in classical DV-Hop localization algorithm,so it brings lar-ger localization error.In order to improve the localization accuracy of the nodes,an improved algorithm based on the o-riginal algorithm was proposed.The average hop-distance which is estimated by multiple anchor nodes was considered to use and weighted average hop-distance was introduced instead of the average hop-distance which is used in the classical algorithm.The simulation results indicate that the novel algorithm reduces the localization error caused by the calcula-tion of hop-distance effectively,and improves localization accuracy at the same network environment.