An improved DV-Hop localization algorithm

Node localization is one of the key technologies in wireless sensor networks. Taking into account the reasons for the hardware and cost, DV-Hop algorithm is wildly used. The main DV-Hop localization error is the distance between unknown nodes and anchor nodes. In this paper, the estimation of average hop-length and RSSI value has been applied to reduce the error of measurement, which is the distance between unknown nodes and anchor nodes. Simulation results show that this localization algorithm is effective, which improves the positioning accuracy.