关键词: 三维定位, 分区加权, Distance Vector Hop（DV-Hop）, 无线传感网络

Abstract: Because of the inherent shortcomings of the two important localization factors of the DV-Hop localization algorithm：The average hop distance of the network anchor nodes and the number of hops of the unknown nodes to the anchor nodes, an improved 3D-DVHop localization algorithm 3DPHW-DVHop（Partial HopSize Weighted） is put forward. When the average hop distance of the network is calculated, the algorithm is optimized by region partitioning and hops count weighting. Finally, the maximum likelihood method is used to estimate the position of the unknown node. After analyzing the theory and proving the simulation experiment, it is concluded that the 3D-DVHop localization algorithm based on the region partitioning and hops count weighting is significantly improved by comparsion with the traditional DV-Hop localization algorithm under the same conditions.

Key words: three-dimensional localization, partition weighting, DV-Hop, wireless sensor network