关键词: 传感器网络, Dv-hop算法, 节点定位, 定位精度, 多维平均跳距

Abstract: This paper proposes an algorithm with the Average jump Distance of the Multi-Dimensional（ADMD） Dv-hop to address the problem that Dv-hop localization algorithm of wireless sensor networks produces so much error of distance estimation to other nodes.According to the localization principle of the Dv-hop algorithm，this paper proposes two improvements including the estimation of average single hop distance，the calculation of distance between unknown nodes and reference nodes.The localization performances are analyzed in theory and with simulations at different communication radius，the rate of anchor nodes，and the density of nodes.The results show that the proposed improvements can greatly enhance the localization accuracy of the unknown nodes.The proposed schemes do not change the localization process of the Dv-hop algorithm，and they need no further communication resource.

Key words: sensor network, Dv-hop, node localization, positioning accuracy, average jump distance of multi-dimensional