Calibration Based DV-hop Localization Algorithm for WSNs with Different Network Topologies

Abstract

Aiming at the deficiencies and limitations of DV-hop localization algorithm, this paper proposes a calibration based DV-hop localization algorithm, which defines a new measure to estimate the neighborhood distances by relating the proximity of two neighbors to their connectivity difference. Furthermore, this algorithm adds the calibration step, which moves the estimated position of unknown node to the more reasonable one with the help of credible neighborhood distance. Simulation results demonstrate that our algorithm is more reliable in various topologies and achieves better localization performance in comparison with the existing relative algorithms under the same scenario.