An improved node localization algorithm in wireless sensor network

This paper proposes a kind of improved DV-Hop algorithm to solve the problem of low positioning accuracy in traditional DV-Hop algorithm. This method uses wavelet neural network to estimate the per-hop distance of the anchor nodes. In order to improve the positioning performance, the distance of per-hop is applied in the wireless sensor network. Simulation results show that, the localization error of the improved algorithm significantly reduced. And in the case of less anchor nodes, the superior positioning performance of the WNNDV-Hop algorithm is more obvious.