MDS and Trilateration Based Localization in Wireless Sensor Network

• 作者: Mukesh Zaveri Shailaja Patil
• 来源期刊: 无线传感网络(英文)
• 学科: 工学
• 关键词: Wireless Sensor Network LOCALIZATION MULTIDIMENSIONAL SCALING TRILATERATION
• 年，卷（期）: 2011,（6）
• 页码范围: 198-208
• 页数: 11页
• 分类号: TN92

摘要

Localization of sensor nodes is crucial in Wireless Sensor Network because of applications like surveillance, tracking, navigation etc. Various optimization techniques for localization have been proposed in literature by different researchers. In this paper, we propose a two phase hybrid approach for localization using Multidi- mensional Scaling and trilateration, namely, MDS with refinement using trilateration. Trilateration refines the estimated locations obtained by the MDS algorithm and hence acts as a post optimizer which improves the accuracy of the estimated positions of sensor nodes. Through extensive simulations, we have shown that the proposed algorithm is more robust to noise than previous approaches and provides higher accuracy for estimating the positions of sensor nodes.