Research on DV-Hop Algorithm for Wireless Sensor Network

Article Abstract: Because the scale factor of anchor nodes is closely related to both node localization accuracy and coverage rate in DV-Hop location algorithm for wireless sensor networks,an improved DV-Hop（iDV-Hop） localization algorithm is proposed in the paper through analyzing the DV-Hop location algorithm for improving the location accuracy and coverage rate.Unknown nodes only receive information of anchor nodes with limited hops in iDV-Hop localization algorithm.When a unknown node receives more than 3 anchor nodes,the unknown node is located and converted to anchor node.Then,the old and the new anchor nodes are involved in the location of the rest unknown nodes.Finally,the simulation result shows that iDV-Hop location algorithm can increase location precision and coverage rate effectively.